Nevada Bureau of Mines and Geology - University of Nevada, Reno

UNIVERSITY OF NEVADA RENO
NBMG OPEN FILE REPORT 85-3
A MINERAL INVENTORY OF THE
PARADISE-DEN10 AND SONOMA-GERLACH
RESOURCE AREAS, WINNEMUCCA DISTRICT, NEVADA
Prepared by 8. F. Bonham, Jr., L. J. Garside, R. B. Jones,
K. G. Papke, J. Quade, J. V. Tingley
Prepared for:
UNITED STATES DEPARTkENT OF THE INTERIOR
BURE.4-U OF LAND MANAGEMENT
WINNEXUCCA DISTRICT OFFICE
WImdCCA, NEVAJIA 89445
Under Contract #YA-553-CTl-1058
J. V. Tingley, Principal Investigator
J. Quade, Research Associate
This information should be considered preliminary.
It has not been edited or checked for completeness
or accuracy.
Nevada Bureau of Mines and Gzorcgy
Un~~i.?rSlI~/ c! P13~4~:a
Fer~:. ?.J+.;;lCa 995 j7.[.:C:3
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1 Sept 85

A MINERAL INVENTORY OF
THE PARADISE-DEN10 AND SONOMA-GERLACH RESOURCE AREAS,
WINNEMUCCA DISTRICT, NEVADA
Prepared for:
UNITED STATES DEPARTMENT OF THE INTERIOR
BUREAU OF LAND MANAGEMENT
WINNEMUCCA DISTRICT OFFICE
WINNEMUCCA, NEVADA 89445
Prepared by:
H. F. Bonham
L. J. Garside
R. B. Jones
K. G. Papke
J. Quade
J. V. Tingley
Under Contract #YA-553-CT1-1058
J. V. Tingley, Principal Investigator
J. Quade, Research Associate
NEVADA BUREAU OF MINES AND GEOLOGY
University of Nevada-Reno, Reno, Nevada
John Schilling, Director/State Geologist
September, 1985

Summary of Work Performed
Index Map
Mining District Descriptions
Sample Descriptions
Analytical Results
Antelope 1
Antelope Springs 4
Arabia 6
Awakening 8
Battle Mountain 11
Black Diablo 13
Black Knob 15
Blue Mountain Area 17
(Ten Mile District)
Blue Wing 19
Bottle Creek 20
Buffalo Mountain 23
Cottonwood 26
Deephole 28
Desert 31
Disaster 33
Donnelly 36
Dutch Flat 38
Farrell 41
Golconda 43
Goldbanks 47
Gold Run 50
Harmony 53
Haystack 55
Hooker 57
Imlay 61
Indian 64
Iron Hat 66
Iron Point 69
Jackson Mountains 72
Jersey Valley 75
Jessup 77
Jungo 80
Juniper Range 82
Kennedy 84
Lake 88
Leadville 91
Leonard Creek 94
M i l l City (Central) 100
Mineral Basin 103
Mount Tobin 105
Muttlebury 109
National 97
TABLE OF CONTENTS
Nightingale 111
Opalite (Cordero) 114
Placerites 117
Potosi 118
Poverty Peak 122
Rabbit Hole 126
Ragged Top 128
Rebel Creek 131
Red Butte 133
Rochester 135
Rosebud 138
Rose Creek 140
Rye Patch 142
San Emido Desert-Lake Range 144
San Jacinto 147
Sawtooth 149
Scossa 150
Seven Troughs 152
Sherman 155
Shon 157
Sierra 158
Spring City 161
Spring Valley 164
Staggs 166
Star 168
Sulphur 171
Table Mountain 174
Ten Mile 179
Tobin and Sonoma Range 182
Toy 185
Trego Hot Springs 188
Trident Peak 190
Trinity 192
Truckee (Fireball) 195
Unionville 197
Varyville 200
Velvet 203
Warm Springs 205
Washiki 208
Wild Horse 211
Willard 213
Willow Creek 215
Winnemucca 217
Appendix A
Appendix B

Summary of Work Performed
Mineral Inventory Paradise-Denio and Sonoma Gerlach (Winnemucca District)
Resource Areas
Contract #YA-553 CTI-1058
U.S. Bureau of Land Management
Work was completed on the Winnemucca District Mineral Resource
Inventory in two complementary stages. First, search of the literature was
made, and data on mineral occurrences within the project area were
compiled on short form Nevada CRIB forms. All of the information was
plotted on maps for field use. Folios were then prepared for each mining
district, which included the CRIB forms, notes on mining claims, and
pertinent references. This material provided the basis for planning the
second stage of the inventory, the field examinations.
During the field stage of the project, mining districts within the
Resource area were visited and selected properties were examined.
Important properties as well as outlying prospects were examined and
described in order to provide more complete and accurate information on
the occurrences beyond that provided in the literature. During the
examination, emphasis was placed on collecting geologic information on the
mineral occurrences and on noting current activity.
Photos were taken in each area to document activity, type of mine
workings, and geologic relationships. In addition, samples showing typical
mineralization were collected from most of the visited properties. All of
the samples were high-graded and usually taken from dumps, ore piles, or
outcrops. Some samples of nearby intrusive rock or altered material were
collected for comparison purposes.
The samples were prepared for analysis by the Nevada Analytical
Laboratory, UNR, Reno, and analyzed for 31 elements (semi-quantitative
spectrographic technique) by the Branch of Exploration Geochemistry, U.S.
Geological Survey, Denver, Colorado. The analytical work was done through
a cooperative agreement between the Branch of Exploration Geochemistry and
the Nevada Bureau of Mines and Geology.
The information collected during the course of the Winnemucca project
has heen compiled and is presented in this report in the following form:
1) Summary report organized by mining district: includes location,
history, field observations, and current mining status of each
district. A list of selected references follows each individual
district write-up. Sample description sheets and results of
geochemical analysis are included in the appendix of the report.
2) Mining District folios:
a) Prospect forms describing each mine property examined in the
field. Sample descriptions accompany forms of sampled
properties.

) CRIB forms containing location and brief description of mine
properties as gathered from literature sources and field
information.
3) Maps
a) Planimetric maps, 30' series, showing location of mining
districts, and sample locations.
b) USGS 7 112' and 15' topographic maps showing sample locations
and prospect names.
4) Photo album, organized by mining district, containing slides of
visited properties and documentation of new work.
In addition to this information, topographic field sheets and field
notes are on file at the Nevada Bureau of Mines and Geology. Also, splits
of all the samples taken as well as selected hand specimens have been
retained at the Nevada Bureau of Mines and Geology. This material may be
useful for additional studies in selected areas.
In reporting on this project, no attempt has been made to compile
detailed geologic information on the districts. Since this project was a
mineral inventory, our efforts were confined to acquiring new information
on prospects, and no time was available to collect new regional geologic
data. Local or regional geologic interpretations were derived from
published geologic maps or other pertinent literature sources.
The literature search and compilation of CRIB data for this project
was done mainly by Daphne D. LaPoint. Field work was carried out by H. F.
Bonham, L. J. Garside, R. B. Jones, K. G. Papke, J. Quade, and J. V.
Tingley during the summer and fall of 1983 and the spring and summer of
1985. Each geologist prepared the written description of those districts
he examined in the field.

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0- County Line
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Inventory Area Outline
PARADISE-DENIO
SHOSHONE-EUREKA
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Mineral inventory area covered by this report
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LOCATION MAP NEVADA MINERAL INVENTORY OPEN FILE REPORTS
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/-\-
/- County Line
SONOMA-GER LACH
Inventory Area Outline
SHOSHONE-EUREKA
TONOPAH
LOCATION MAP NEVADA MINERAL INVENTORY OPEN FILE REPORTS
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CALIENTE
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I
I

LOCATION
ANTELOPE DISTRICT
The Antelope district, as defined by Johnson (1977), covers the
central Antelope Range in Pershing County generally between the Humboldt
County line and Poker Brown gap. This large area includes parts of three
other mining districts (Scossa, Placerites, and San Jacinto or Poker
Brown) which, in this report, are treated separately.
We are confining the limits of the Antelope district to the northern
Majuba Mountains including only the mines at Majuba Hill and the deposits
to the west around Antelope Summit.
HISTORY
According to a report by the Southern Pacific Co. (1964) some $5000
worth of silver ore was produced from the Noble Mine, located about one
mile west of Antelope Summit, prior to 1904. The Nevada Superior
silver-lead deposit, located about three quarters of a mile southeast of
the old Noble Mine, was first developed in 1905 and began shipping ore in
1906 (Johnson, 1977). The Majuba Hill copper deposit was located in 1907,
and the other mines in the district were apparently first developed at
this time. The Majuba Mine was leased by the Mason Valley Mines Company in
1914 and some direct shipping copper ore was produced during the First
World War. Except for a few cars of high grade ore shipped in 1928, the
Majuba Mine was idle until 1942. During the period between 1942 and 1953
ores of both copper and tin were shipped from the property (Mackenzie and
Bookstrom, 1976). Total production from the Majuba Mine has been
approximately 2,849,000 lbs. of copper and 21,000 Ibs. of tin (Stevens,
1971).
The immediate area of Majuba Hill was extensively explored for
molybdenum between 1971-1974 but minable deposits were not found and the
district is now inactive.
GEOLOGIC SETTING
According to Johnson (1977), the central part of the Antelope Range
is made up of a thick sequence of Triassic and Jurassic metasedimentary
rocks which have been intruded by small sills and dikes of andesite,
dacite, latite, and diorite of pre-Tertiary(?) age. The mines in the
western part of the district and on the flanks of the Majuba Mountains are
located along shear zones and veins in slate, limestone, and quartzite.
Majuba Hill is the surface expression of a subvolcanic complex of rhyolite
porphyries and breccias intruded during mid-Tertiary into a series of
steeply-dipping Triassic(?) argillites (MacKenzie and Bookstrom, 1976).
Most, if not all, Majuba intrusives were accompanied by hydrothermal
mineralization and alteration.
Antelope District - 1

ORE DEPOSITS
At the Nevada-Superior Mine, on the northwest end of the district,
ore deposits are quartz-replacement veins in thin-bedded phyllites which
contain silverbearing galena and sphalerite. The veins occupy
northwest-trending shear zones in the metasedimentary rocks. The vein
system at the Last Chance Mine, on the south side of Majuba Hill, is
similar but the workings are close to an andesite dike. Other vein
occurrences in the metasedimentary rocks are also similar in structure and
mineralogy. Some veins, however, strike northeast, and stibnite is present
at the DeSoto Antimony Mine.
Several types of mineralization are associated with the various
porphyries and breccias at Majuba Hill. An early stage intrusive, the
Felsite Stock of MacKenzie and Bookstrom (1976), has associated
chalcopyrite, pyrite, arsenopyrite, and pyrrhotite. Some silver and tin
accompanies this mineralization. Silicification and weak molybdenum
mineralization are associated with the Majuba Porpyry, a younger intrusive
phase, and high-grade copper and tin ores are associated with an even
later phase intrusive, termed the Late Rhyolite Porphyry. Uranium
mineralization has been reported from one copper-tin stope in the Majuba
Mine but its age relationship to the other mineralization stages is
unknown.
Gold placer deposits are known to occur along the eastern flank of
the Majuba Mountains and they continue to be worked intermittently on a
small scale. The source of the gold is unknown but it probably originates
from small gold-bearing quartz veins which cut metasedimentary rocks in
the adjacent mountains.
GEOCHEMICAL RELATIONSHIPS
Geochemical values obtained from ores from the Antelope district seem
to show two distinct groupings, but a relationship between the two groups
also seems to exist. Samples taken from the Majuba Hill intrusive center
have very high tin, boron, beryllium, moderate to high copper, low lead
and zinc, high but erratic arsenic and bismuth, and no cadmium or
antimony. Samples taken from the vein occurrences on the margins if the
district have low but still anomalous tin, boron, and beryllium, copper,
high lead and zinc, high but erratic arsenic, bismuth, and cadmium, and
low antimony. The apparent common association of tin, boron, and beryllium
may indicate that all of the mineralization within the district is
related. The variability of concentration could be attributed to zoning.
SELECTED REFERENCES
Johnson, M. G. (1977) Geology and Mineral Deposits of Pershing County,
Nevada: NBMG Bull. 89.
Lawrence, E. F. (1963) Antimony Deposits of Nevada: NBMG Bull. 61.
Lincoln, F. C. (1923) Mining Districts and Mineral Resources of Nevada:
Nevada Newsletter Publishing Co., Reno.
Antelope District - 2

MacKenzie, W. B., and Bookstrom, A. A. (1976) Geology of the Majuba Hill
Area, Pershing County, Nevada: NBMG Bull. 86.
Matson, E. J. (1948) Investigation of the Majuba Hill Copper-Tin Mine,
Pershing County, Nevada: USBM RI 4378.
Smith, W. C., and Gianella, V. P. (1942) Tin Deposit at Majuba Hill,
Pershing County, Nevada: USGS Bull. 931-C.
Southern Pacific Co. (1964) Minerals for Industry, Northern Nevada and
Northwestern Utah: Vol. I, Southern Pacific Co. Land Dept., San
Francisco, CA.
Stevens, D. L. (1971) The Geology and Ore Deposits of the Antelope (Majuba
Hill) Mining District, Pershing County, Nevada: M.S. thesis, Univ. of
Nevada-Reno.
Trites, A. F., and Thurston, R. H. (1958) Geology of Majuba Hill, Pershing
County, Nevada: USGS Bull. 1046-1.
Vanderburg, W. 0. (1936) Reconnaissance of Mining Districts in Pershing
County, Nevada: USBM IC 6902.
Antelope District - 3

LOCATION
ANTELOPE SPRINGS DISTRICT
The Antelope Springs district is located in the southern end of the
Humboldt Range in T27N,R34E, Pershing County. It is accessible by paved
road from Colado.
HISTORY
The Antelope Springs district, also known as the Relief or Pershing
district, was originally explored for antimony at the Hollywood Mine in
the 1800's (Johnson, 1977). High-grade silver ores were found in the
original Relief Mine in 1869 and the mine was worked from the 1870's until
the early 1900's producing ore valued at between $200,000 to $2,500,000.
Mercury was discovered in 1907 at the Red Bird Mine. Subsequently a
number of other mercury mines were discovered in the district including
the Pershing, Juniper, Montgomery, Eastern Star and Lori mines. The mines
have been worked on an intermittent basis, from 1914 through the 1970's.
The total production exceeds 12,500 flasks of mercury.
The Relief gold mine, now the only active mine in the district, was
discovered in the early 1980's by exploration conducted initially by Duval
Corp., and subsequently by Lacana and the Southern Pacific Co. The
discovery, made in the vicinity of the old Bohannon fluorspar prospect,
was put into production by Lacana in 1984.
Total antimony production from the district has amounted to over 514
tons of metal from the Hollywood and Cervantite mines. Exploration is
currently being conducted for gold mineralization in the vicinity of the
antimony and mercury deposits.
GEOLOGIC SETTING
Rocks exposed in the Antelope Springs district include a section of
Mesozoic rocks ranging in age from Lower Triassic to Middle Jurassic and
Tertiary basaltic flows and Quaternary lacustrine and alluviul deposits.
Rhyolitic volcanic rocks of the Koipato Group crop out in the northern
part of the district. They are overlain to south by rocks of the Prida,
Natchez Pass and Grass Valley Formations. In the southern part of the
district the Grass Valley and Dun Glen Formations and the Auld Lang Syne
Group are present. The Mesozoic rocks are complexly folded and faulted.
The Relief fault, a lorangle thrust, extends through the northern part of
the district. Rocks in the southern part of the district are thrown into a
sequence of northwest trending recumbent to overturned synclines and
anticlines.
ORE DEPOSITS
The old Relief silver mine is located in the basal member of the
Prida Formation in a geologic setting similar to many of the silver
deposits in the Humboldt Range. The new Relief gold mine is located in
Antelope Springs District - 1

ocks of the upper member of the Natchez Pass Formation. Some
mineralization also occurs in limy shales of the Lower Grass Valley
Formation. The chief host rock for the gold mineralization is a silicified
carbonate breccia which has been interpreted as a debris flow and as a
breccia in the sole of a thrust fault. Extensive areas of jasperoid occur
in the mine area and much of the ore is silicified carbonate breccia.
Locally abundant fluorite is present in the ore zone. The ore averages 30
m thick and is oxidized. The ore zone continues both to the east and west
of the mine area, but the depth of overburden becomes too great for
economic recovery of the gold. The announced reserves are 8 million tons
grading 0.035 ounce per ton gold as of September, 1984.
The mercury deposits occur in the southern part of the Antelope
Springs district in limestone breccia of the Dun Glen Formation and in
dolomite conglomerate of post Dun Glen age. The mercury deposits are
clearly localized in these stratigraphic units and this constitutes a
guide to ore in the southern part of the district.
The main ore mineral is cinnabar. Associated with the cinnabar in
some of the mines are stibnite, pyrite, sphalerite and galena. Bindheimite
and antimony oxides are also present. Cinnabar typically occurs in
carbonate veinlets cutting breccia or conglomerate and as crystalline
cinnabar in the conglomerate matrix. Powdery red cinnabar associated with
bindheimite at the Red Bud Mine, is probably of supergene origin.
The main antimony deposit in the district is the Hollywood Mine.
Quartz veins, and veinlets in sandstone and phyllite of the Grass Valley
Formation contain pods and lenses of stibni~e and antimony oxides. The
0 0
vein zone trends N40 -60 W and dips ~60'-70 E. The .wallrocks are strongly
sericitized adjacent to the veins.
GEOCHEMISTRY
Samples taken of typical mineralized rock at the Relief gold mine are
anomalous in silver, arsenic, weakly anomalous in boron, anomalous in
beryllium, antimony, and lead. One sample contained anomalous copper,
molybdenum, and vanadium. Three samples contained 0.55, 1.7 and 3.2 ppm
gold, respectively.
Geochemical data are not available at this time for the mercury or
antimony mines in the district, although it is known, that in addition to
mercury and antimony, the mines contain anomalous lead, zinc, and locally,
gold.
SELECTED REFERENCES
Johnson, M. G. (1977) Geology and mineral resources of Pershing County,
Nevada: Nevada Bureau of Mines and Geology Bulletin 89, p. 115.
Wallace, R. E., Silberling, N. J., Irwin, W. P., and Tutlock, D. B. (1969)
Geologic map of the Buffalo Mountain Quadrangle, Pershing and Churchill
Counties, Nevada: U.S. Geological Survey Map GQ821.
Antelope Springs District - 2

LOCATION
ARABIA DISTRICT
The Arabia district is in the northeastern most portion of the
Trinity Range in central Pershing County. The district is about 5 miles
wide, 15 miles long, with its center about 5 miles southwest of Rye Patch
Dam. The route across the dam also provides the shortest access to the
district from the east.
HISTORY
The initial mining activity in the district began in 1861 with the
discovery of the Montezuma Mine. Ultimately it became the largest mine and
biggest producer in the district. According to Johnson (1977) a five-stamp
mill was moved from the Trinity district and relocated on the east bank of
the Humboldt River in 1863. The site selected for the mill was later known
as Oreana. This mill began crushing ore from the Montezuma Mine and by
1866 a second mill was constructed to handle additional ore from the New
Jersey Mine and many smaller properties that were located and developed
about the same time. According to Paher (1970) the activity in the Arabia
district led to the construction of the first smelter in Nevada in 1867.
The smelter furnaces operated day and night blackening the sky over Oreana
with clouds of smoke and antimonial vapors. The milling had been a huge
success but financial difficulties plagued the operation causing a
temporary shutdown in 1869. Thereafter the smelter functioned
intermittently until 1871 when it was destroyed by fire. The mines
continued to operate but production declined sharply after 1875. Of the
$1.5 million produced from the district more than half came from the
Montezuma Mine.
GEOLOGICAL SETTING
The southern part of the district is underlain by Cretaceous
granodiorites that outcrop in the vicinity of the Arabia mines and
elsewhere and intrudes metasediments of Triassic age Johnson (1977). The
composition of the rocks are similar at the north end of the district but
smaller areas of granodiorite are exposed there as compared to the
southern end of the district. The central part of the district is covered
by Tertiary sediments and minor volcanic flow rocks.
ORE DEPOSITS
The ore deposits at Arabia are along veins in fractures and shears in
granodiorite or in metasediments that form xenoliths in the granodiorite.
Most of the veins consist of quartz, gouge and locally abundant
lead-silver-antimony minerals with lessor amounts of copper and zinc
minerals and minor gold. The dominant ore mineral is argentiferous-
bindheimite but also jamesonite, plumbojarosite, jarosite and arsenopyrite
are also present along with a wide range of yellow oxides of both lead and
Arabia District - 1

antimony. The richest veins were almost solid bindheimite which is
commonly earthy, yellowish brown or may even have a high yellow luster.
Workings in the main camp are a labyrinth of shallow prospects, open-pits,
inclines, shafts and open stopes that follow north trending veins, except
at the Montezuma Mine where the vein system strikes east-west.
To the north of the main camp are numerous workings and prospects
that have explored similar but lower grade mineralization along quartz
veins in granite and metasedimentary rocks. At the Bottomely claims,
stibnite-bearing quartz veins have been exposed along shallow trenches at
the top of a knoll. Minor shows of perlite, pumice, clay and diatomite
have been prospected along the northern margin of the district.
GEOCHEMICAL RELATIONSHIPS
Analyses of ore samples from the Arabia mines were remarkably
consistent. Anomalous values for lead, silver, antimony, and arsenic, were
reported from all the major workings in the district. Zinc was commonly
present but at lower concentrations and more scattered. High values for
boron seemed to correlate fairly well with high metal values. Gold was
detected in all of the samples and ranged in value from .05 to 29.0 ppm.
SELECTED REFERENCES
Johnson, M. G. (1977) Geology and Mineral Deposits of Pershing County,
Nevada: NBMG Bull. 89.
Lawrence, E. F. (1963) Antimony deposits of Nevada: NBMG Bull. 61.
Paher, S. W. (1970) Nevada Ghost Towns and Mining Camps: Howell-North, San
Diego.
Arabia District - 2

LOCATION
AWAKENING DISTRICT
The Awakening district is located in the Slumbering Hills, a small
range of mountains that lie approximately 45 miles via road from
Winnemucca. The range separates Silver State Valley on the east from
Desert Valley on the west. The north boundary is approximately State Route
140, the south boundary a saddle north of Blue Mountain. Strictly
speaking, the district proper is considered as occupying the northern half
of the range but for the purposes of this report the entire range is
classed as the Awakening district.
HISTORY
According to Vanderburg, mining activity began in the district around
1910 with the discovery of the Alabama Mine. Gold ore containing some
silver was shipped from the district in 1912 and it is assumed that this
ore came from the Alabama Mine. From this time until 1935 small,
intermittent production was made from several small properties, all
located on the east side of the range. In 1935 the Jumbo Mine was
discovered and this precipitated a major claim staking rush. There was
continuous production from the district through 1958. Peak years of
production were 1936 through 1941 and again from 1948 through 1951. No
major discoveries were made after the Jumbo Mine and activity died down to
virtually nothing until the late 1970's--early 1980's when the price of
gold rose to an all time high. In 1985 Amax Exploration announced a new
gold discovery, the "Sleeper" deposit, which is currently being developed
into a mine. Announced reserves for this deposit are approximately 1.4
million tons with a grade of 0.35 oz/ton gold and 1.0 oz/ton silver.
Production for the district through 1963, as given by Willden is:
26,262 oz gold, 36,948 oz silver, 3,100 lbs copper, and 42,704 lbs lead.
The large majority of production has come from the Jumbo Mine. It will be
quite obvious from looking at the announced figures given by Amax that the
"Sleeper" deposit will far exceed any production to date that has come
from the district.
GEOLOGIC SETTING
An excellent summary of the geologic of the district is given by
Calkins: "The Slumbering Hills are underlain by slate, rhyolite, and
quartzite which have been intruded by a large quartz monzonite to
granodiorite stock near the center of the range. Locally, contact
metamorphism has produced mica schists from the low-grade metamorphic
rocks. These rocks are overlain by basalt, dacitic welded tuffs, latite,
and andesite of Tertiary age in a few places, mostly in the northern part
of the range. Some water-laid tuffs are present locally beneath the
volcanic rocks." Willden considers the older metamorphic rocks to be of
Triassic-Jurassic age.
Neither Willden or Calkins recognized any major structures in the
range. In the pre-Tertiary rocks there has been minor small folding in the
Awakening District - 1

metamorphosed beds. The apparent strike of these folds is north-south but
individual folds cannot be traced far due to their small size. There is
likewise very little faulting in the range, being only a few high-angle
faults. There is little evidence that the range owes its present relief to
normal faulting.
ORE DEPOSITS
Even though the district is considered a gold district the production
of silver exceeds that of gold, with a historical ratio of gold to silver
at 1:1.4. Production from the newly discovered "Sleeper" deposit will
increase this ratio even more, it being 1:2.8-gold to silver. Besides gold
and silver the district has also produced minor quantities of copper and
lead. One tungsten occurrence is reported for the district but no
production is credited to it.
As near as can be estimated, 60% to 70% of the production credited to
the district has come from the Jumbo Mine. At this property, rocks
consist of metamorphosed sediments, principally shale, which the writer
0
prefers to call phyllite. This unit dips from 55' to 70 to the east. Gold
alloyed with silver occurs in the free milling state in numerous stringers
in the shale. These stringers are in part filled with vein-forming
feldspar and adularia. One notable feature of this deposit is the small
amount of silicification present. At the time of visitation open-pit
mining was in progress in the area of the older underground workings. This
material was being hauled to the valley floor on the west side of the
range and was being treated by heap-leach methods.
The rest of the gold mines and prospects in the northern part of the
range and extending south as far as the Havalau Mine have the same basic
geologic setting as the Jumbo Mine, namely quartz veins in metasediments.
Mines and prospects south of the Havalau Mine are in quartz veins in
granodiorite. All of these properties, of which there are eight, have
accounted for only 30% to 40% of the production from the district. There
was no current activity at any of these properties.
The single tungsten prospect in the district, called the Scheelite
prospect, is located at the south end of low hills on the east flank of
the range and is about 1.5 miles northwest of Daveytown. Here, a small
body of granodiorite intrudes shale and quartzite and these rocks are cut
by numerous andesite dikes and quartz veins. The property has been
explored by an open pit and some mining of scheelite bearing material is
probable but there is no recorded production.
Johnson states that there is one gold placer in the district. Gold
was recovered from stream gravels along Teepee Creek in 1914. This creek
is not shown on maps of the area and was not visited, but it is thought to
be on the east side of the range, or hills, that were the locale of the
prospecting activity at the time. One ounce of gold has been reported
recovered from this placer.
SELECTED REFERENCES
Couch, B. F., and Carpenter, J. A. (1943) Nevada's metal and mineral
production: NBMG Bull. 38, p. 65-70.
Awakening District - 2

Johnson, M. G. (1973) Placer gold deposits of Nevada: USGS Bull* 1356, P-
34.
Lincoln, F. C. (1923) Mining districts and mineral resources of Nevada:
Reprint Edition, 1970, Douglas McDonald, p. 97.
Stager, H. K. (in prep) Tungsten Deposits of Nevada: NBMG Bull.
Vanderburg, W. 0. (1938) Reconnaissance of mining districts in Humboldt
County, Nevada: U.S. Bur. Mines I.C. 6995, p. 16-17.
Willden, R. (1964) Geology and mineral deposits of Humboldt County,
Nevada: NBMG Bull. 59, 154 p.
Awakening District - 3

LOCATION
BATTLE MOUNTAIN DISTRICT
The Battle Mountain mining district, which includes a number of
subdistricts, is located on Battle Mountain, a few tems of kilometers
southwest of the town of Battle Mountain. Most of the district is located
in Lander County, and a summary of the district is presented in Stager
(1977, p. 66-67) as well as in Tingley and Smith (1983). Only a small part
of northern Battle Mountain is located within the Winnemucca Resource
Area, in Humboldt County. This part of the Battle Mountain district is
further described below.
HISTORY
The Battle Mountain district was organizaed in 1866, but prospectors
had been in the area for some years previous (Hill, 1915, p. 71). There is
little information on the discovery dates of the relatively minor mines
and prospects in the Humboldt County portion of the district. Hill (1915,
p. 77-78) describes four properties (The Nevadian, Golden Era, Rose Spring
and Copper Glance Groups) from this area, and Willden (1964) reports
production from some properties in this area as early as 1908. The
Marigold Mine was reportedly discovered in 1937 (Willden, 1964, Table 6).
The district has been active several times since the late 1800's.
Recent mining activity in the Humboldt County portion of the district
includes placer mining in the vicinity of the B & M Placers in S17 and
20,T32N,R44E. Recent rotary drilling was noted about 1.5 km south of the
Morning Star Mine. This exploration was probably for precious metals.
Disseminated gold ore at the Marigold Mine was mined and heap leached
dudring 1983 and 1984.
GEOLOGIC SETTING
The Antler Peak Quadrangle, which includes Battle Mountain, was
mapped by Roberts (1951). Willden (1964) has summarized the geology of the
Humboldt County portion of Battle Mountain; portions of that summary are
reported below:
Most of the part of Battle Mountain in Humboldt County is underlain
by the Harmony Formation of Cambrian age and the Valmy Formation of
Ordovician age. The low northwestern foothills are underlain by the
Pennsylvanian and Permian Pumpernickel and Havallah Formations, except for
a narrow belt underlain by the Battle and Antler Peak Formations
(Pennyslvanian and Permian). Some small intrusive bodies of quartz
monzonite and granodiorite crop out in-the northeastern part of the range.
Two important thrust faults exposed in the north end of the range within
Humboldt County are: the Dewitt thrust, assigned by Roberts (1951) to the
Antler orogeny of the Late Mississippian or Early Pennsylvanian age, which
brought the Harmony Formation over the Valmy Formation; and the younger
Golconda thrust which brought the Pumpernickel and Havallah Formations
over the Antler Peak, Battle, and Valmy Formations.
Battle Mountain District - 1

ORE DEPOSITS
The lode deposits at the northeastern end of Battle Mountain are
mainly in Cambrian Harmony Formation. Production from these properties is
predominantly copper, lead, silver and gold (Willden, 1964, Table 6) The
workings are along northwest- and northeast-trending mineralized fault
zones, and oxide copper minerals are common. Quartz vein matter is often
spotty; the unoxidized ore at one property contains galena, chalcopyrite,
sphalerite, and free gold. Wallrocks are silicified at some properties.
Placer gold deposits in Snow Gulch and unnamed canyons to the southeast
contain coarse, locally derived gold.
The Marigold Mine is locted at the northwestern tip of Battle
Mountain. Mineralization consists of fine-grained, disseminated gold is
the lower part of the Pennsylvanian Battle Formation where it
unconformably overlies Ordovician Valmy Formation. Nevada North Resources,
Inc. (formerly True North Inc.) has reported low-grade (0.028 to 0.094
oz/ton) gold intercepts from shallow (less than 80 feet) drill holes on
the property. A test heap leach of 3206 tons of ore (with a grade of 0.107
oz/ton) recovered 82% of the gold present (13 Nov 84 and 24 Sep 84 news
releases of Nevada North Resources, Inc.).
SELECTED REFERENCES
Hill, J. M. (1915) Some mining districts in northeastern California and
Northwestern Nevada: U.S. Geological Survey Bulletin 594.
Roberts, R. J. (1951) Geology of the Antler Peak quadrangle, Nevada: U.S.
Geological Survey Map GQ-10.
Stager, H. K. (1977) Mineral deposits in Geology and mineral deposits of
Lander County, Nevada: Nevada ~ureaTof Mines and Geology Bulletin 88.
Tingley, J. V. and Smith, P. L. (1983) A mineral inventory of the
Shoshone-Eureka Resource Area, Battle Mountain District, Nevada: Nevada
Bureau of Mines and Geology Open-file Report 83-3.
Willden, Ronald (1964) Geology and mineral deposits of Humboldt County,
Nevada: Nevada Bureau of Mines and Geology Bulletin 59.
~attle Mountain District - 2

LOCATION
BLACK DIABLO DISTRICT
The Black Diablo mining district is located on the Pershing-Humboldt
County line on the east side of the Sonoma Range. The major mine, the
Black Diablo, is located in S2,T32N,R39E. That mine and a few nearby
properties make up the district.
HISTORY
Manganese deposits have been known in the area since 1900, but no ore
was produced until 1929. Johnson (1977, p. 55) reports that the Black
Diablo Mine produced most of the manganese mined in Pershing County
between 1929 and 1954. The Black Diablo Mine is apparently the same
property as the O1Brian and Tucker claims and the De La Vega claims
(Johnson, 1977, p. 55).
GEOLOGIC SETTING
The manganese deposits in the Black Diablo district are syngenetic
deposits in the Pennsylvanian and Permian Pumpernickel Formation, which
consists of argillite, chert, and greestone. The manganese is believed to
have been deposited from submarine hot springs.
ORE DEPOSITS
At the Black Diablo Mine, a massive lens of black manganese ore
occurs in a sequence of dark greenstone, light gray chert, and olive to
maroon argillite. Red jasper occurs above, within, and below the ore zone.
The deposit is almost entirely braunite intergrown with chalcedony; small
amounts of bementite, rhodenite, and piedmontite occur also, as well as
manganese oxides near the surface (Johnson, 1977, p. 55). The deposit
parallels bedding in the Pumpernickel Formation. Nearby manganese
properties are reported to be similar to the Black Diablo deposit,
although small in size and of lower grade (Johnson, 1977, p. 55).
SELECTED REFERENCES
Perguson, H. G., Muller, S. W. and Roberts, R. J. (1951 Geology of the
Winnemucca quadrangle, Nevada: U.S. Geological Survey Map GQ-11.
Johnson, M. G. (1977) Geology and mineral deposits of Pershing County,
Nevada: Nevada Bureau of Mines and Geology Bulletin 89.
Black Diablo District - 1

Needham, A. B. and Trengrove, R. R. (1950) Investigation of Black Diablo,
Black Eagle and Black Rock manganese deposits, Pershing and Lander
Counties, Nevada: U.S. Bureau of Mines Report of Investigations 4713.
Trengrove, R. R. (1959) Reconaissance of Nevada manganese deposits: U.S.
Bureau of Mines Report of Investigations 5446.
Black Diablo District - 2

LOCATION
BLACK KNOB DISTRICT
The Black Knob district is located in the northern West Humboldt
Range in south central Pershing County. The district lies south of Black
Knob and west of Packard Flat and, in area, covers only the northeast
portion of T27N,R33E. The principal mine in the area, the Sutherland
antimony mine, is just north of the Coal Canyon road at a point about 15
miles east of the town of Lovelock.
HISTORY
According to White (1871), claims on the Sutherland antimony
occurrence were staked in June 1870. A second mine is described in the
same report as being located about 2 miles to the east, on the southeast
slope of the mountain. This second property was a gold-silver occurrence.
The district was considered part of the Relief district at the time of
this early activity. About 3000 tons of 20 percent antimony ore were mined
from the Sutherland deposit prior to 1914. Between 1915 and 1919 and again
in 1948-1949 the Sutherland was the largest antimony producer in Nevada
(Johnson, 1977). In 1970, the National Lead Co. built a mill at Oreana,
north of the district, to treat antimony ores from the Sutherland and
other nearby mines. There is no record that any ore-was mined at that
time, however. Later, around 1972-73, Greg Austin of Winnemucca leased the
Sutherland and mined some ore from the deposit. Ore was trucked to the
mill at Toulon, south of Lovelock, for treatment. Again, no record of this
mining exists but the total production was small. At the time of our
examination in 1985 there was no activity at the Sutherland property.
GEOLOGIC SETTING
Shale and interbedded calcareous shale, sandstone, and limestone of
Triassic-Jurassic age are exposed in most of the Black Knob district.
Tertiary sedimentary and volcanic rocks capped by Tertiary and Quaternary
basalt cover the sedimentary bedrock on the east and west sides of the
district (Johnson, 1977).
ORE DEPOSITS
As described by Lawrence (1963), the Sutherland Mine is on a quartz
vein that cuts the sedimentary sequence, which at the mine is part of the
western limb of a north-plunging anticline. The vein is from 1 t o 48
inches wide, strikes approximately north and dips 80 degrees west to 80
degrees east. The vein contains small pods, streaks, blebs, and crystals
of stibnite that is slightly oxidized to the full depth of the workings.
The antimony mineralization probably is related to the intrusion and
silicification of the volcanic plugs west of the mine (Johnson, 1977).
Elsewhere in the district, antimony and mercury prospects occur in a
northwest-trending limestone bed in Sections 11, 13, and 14, T27N,R33E
Black Knob District - 1

(Bailey and Phoenix, 1944), and fluorspar occurrences are reported south
of Black Knob (Horton, 1961). The fluorspar deposits are not mentioned by
Papke (1979), and may be outside of the district.
SELECTED REFERENCES
Bailey, E. H., and Phoenix, D. A. (1944) Quicksilver Deposits in Nevada:
NBMG Bull. 41.
Horton, R. C. (1962) An Inventory of Fluorspar Occurrences in Nevada: NBMG
Report 1.
Johnson, M. G. (1977) Geology and Mineral Deposits of Pershing County,
Nevada: NBMG Bull. 89.
Lawrence, E. F. (1963) Antimony Deposits of Nevada: NBMG Bull. 61.
Lincoln, F. C. (1923) Mining Districts and Mineral Resources of Nevada:
Nevada Newsletter Publishing Co., Reno.
Papke, K. G. (1979) Fluorspar in Nevada: NBMG Bull. 93.
White, A. F. (1871) Third Biennial Report of the State Mineralogist for
the Years 1869 and 1870: Carson City, Nevada.
Black Knob District - 2

LOCATION
BLUE MOUNTAIN AREA
(Ten Mile District)
The Blue Mountain area lies approximately 18 miles west of Winnemucca
and to the immediate north of the road that runs between Winnemucca and
Jungo. It is located on portions of the Rose Creek, Pronto, Gaskell, and
Mormon Dan Butte 7 1/2 minute topographic quadrangle maps, with the bulk
of it on the Pronto quadrangle.
HISTORY
Nothing could be found in the literature on the history of the mine
workings at Blue Mountain. There are only two areas in which work has been
done. One lies on the south and east flank of the mountain. From all
appearences these workings may date back as far as the 19301s(?). The
second area of workings is located on the west-northwest flank of the
mountain. Work here originally(?) consisted of mainly one shaft which has
been wiped out from later, overlying exploration work. The most extensive
workings are in and about the Atlas mine area. Individual workings here
are quite small but they are spread over an area of approximately one mile
in length (north-south) by approximately 1/2 mile in width.
GEOLOGIC SETTING
Blue Mountain is composed essentially of two formations separated by
a thrust fault, one of which has been intruded by a gabbro. The western
third of the mountain is composed of an un-named formation of
Triassic-Jurassic age. It is made up of phyllite, slate, fine-grained
quartzite, and limestone. Towards the south-southeast edge of this
formation is a gabbro intrusive which covers approximately one square
mile. To the east of these two units and making up approximately
two-thirds of the mountain is the Triassic Raspberry formation which was
first described by Ferguson et. al. This formation is composed of gray,
black, buff or green colored slate, which locally can be phyllitic;
limestone lenses with limestone conglomerate in the lower portions of the
formation and quartzite lenses varying from a few inches in thickness up
to a 100 feet in thickness. The contact between these two largest units is
a thrust fault (as mapped by Willden). It runs from the north end of the
mountain to the south end and puts the younger metasediment formation over
the older Raspberry formation. Two other, much smaller, areas of outcrop
are found on the mountain, neither of which exceeds 2 square miles in
areal extent. One of these is a quartzite and mudstone unit which crops
out on the southeast flank of the mountain. It is Triassic in age and
shown by Willden to be somewhat older than the Raspberry formation. It is
in normal sedimentary contact with the Raspberry formation, although the
contact is mapped as approximately located or inferred. The second small
unit outcrops on the far east edge of the mountain and extends beyond what
the writer considers as Blue Mountain proper. These rocks consist of
basalts and andesites.
Blue Mountain Area - 1

ORE DEPOSITS
Only two areas of mineralization are known to exist. One is the Atlas
Mine area, located on the south-southeast side of Blue Mountain. The
second is the Blue claims, located on the northwest flank of the mountain.
Geology around the Atlas Mine consists of medium to dark gray
phyllitic shale that is thinly to coarsely laminated, heavily iron stained
and cut by small quartz veins. The quartz veins vary in color from dark,
greasy gray to milky white. Also observed in the immediate mine area were
fragments of granitic "dike" material. The writer did not see any of these
granitics in outcrop. It is thought that the mineralization is associated
with the quartz veins and granitic dike material.
Individual workings are small but widely scattered and consist of
inclined shafts and adits scattered over the top of a ridge. A later set
of workings is superimposed over these and consists of dozer cuts and
trenches. It is thought that there has probably been some production from
this area but how much is not kown. Judging from the size of the workings
and the occurrence of mineralization it would have had to have been quite
small. Sample f2456 was collected here.
The Blue claims are staked on what appears to be an up-faulted block
of highly silicified and iron-stained limestone. Silicification has been
so intense in a few small areas that the limestone has been altered to
jasperoid. Iron gossan is developed in a few places also. There has been
no production from this area. It is just a good looking prospect. Original
work, judging from the topographic map, appears to have been the sinking
of a shaft. It is not known what the size or depth was. Superimposed over
the shaft, and extending for the better part of a mile north of the old
shaft, is a series of dozer cuts/roads and drillsites. There must be a
couple of dozen drillsites, some of which were drilled, most seemed not to
have been drilled. This work was done within the past two years and while
"no paper" could be found on the claim posts, it is thought that the work
was performed by Atlas Minerals. The mineral commodity sought was probably
gold, the same as at the Atlas Mine. Sample #2457 was collected here.
REFERENCES
Ferguson, H.G., Muller, S.W., and Roberts, R.J., 1951, Geology of the
Winnemucca quadrangle, Nevada: U.S. Geol. Sur. Geo. Quad Map GQ-11.
Willden, R., 1964, Geology and mineral deposits of Humboldt County,
Nevada: Nevada Bureau of Mines Bull. 59, 154 p.
Blue Mountafn Area - 2

LOCATION
BLUE WING MINING AREA
The Blue Wing Mining area covers approximately 10 square miles in
western Pershing County and is centered about 2 miles south of State
Highway #48 on the northern margin of the Blue Wing Mountains.
HISTORY
According to Stager (in prep) a small amount of tungsten ore was
shipped from several open cuts and short adits on the Springer prospect in
secs. 11 and 12 T29N,R26E. The shipment was made in 1972 and consisted of
11 tons of ore, containing 0.8 percent WO . The prospect got its name from
a Mr. Harry Springer of Lovelock who firs2 operated the property during
World War I.
According to Johnson (1977) the northwest flowing drainage in the
center of the district is the site of a small placer operation that
produced a few ounces of gold and silver during 1940-41. The workings are
covered by the Black Mountain claims although they are not active at this
time .
GEOLOGIC SETTING
Triassic and Jurassic metasedimentary rocks crop out in the area and
are intruded by granodiorite of Cretaceous age. The older rocks are
overlain locally by rhyolite and sediments of Tertiary age.
ORE DEPOSITS
The Springer mine workings explore an east-trending zone of weak
mineralization in metasedimentary rocks. Although the property is
described as a tungsten occurrence, a sample collected from the dumps did
not contain any scheelite. Samples from quartz veins in the outcrop area
of metasedimentary rocks above the placers did, however, contain low
gold-silver values.
SELECTED REFERENCES
Johnson, M. G. (1977) Geology and Mineral Deposits of Pershing County,
Nevada: NBMG Bull. 89.
Stager, H. K. (in prep) Tungsten Deposits of Nevada: NBMG Bull.
Blue Wing Mining Area - 1

LOCATION
BOTTLE CREEK DISTRICT
The Bottle Creek district is located in the northeastern part of the
Jackson Mountains. It can be reached from Winnemucca via U.S. Route 95
north for about 30 miles then on to State Route 140, going west, for about
30 miles. The district lies south of this highway approximately 8-10
miles. All the mines and prospects are located on the Bottle Creek 15
minute topographic map.
HISTORY
According to Bailey and Phoenix cinnabar float was known in the
district as early as 1928, but the lodes were not discovered until 1936.
Production from the district from late 1936 through 1943 yielded 4,544
flasks of quicksilver, with more than 3,000 flasks coming from a single
diabase dike on which the Blue Can and McAdoo mines are located. By the
end of 1943 activity in the district was nil. Renewed activity occurred in
the mid 195Ots, and from 1956 to 1958 two flat lying ore bodies in a
basalt flow were mined by open-pit methods at the Red Ore Mine resulting
in a production of about 1,000 flasks of mercury. Interest in the district
declined again after 1958 but picked up again in the mid to late 1960's
when the price of quicksilver reached all time highs of $800 to $1,000 per
flask. Production records are very sketchy for this period but indications
are that very little production resulted. There has been very little
interest in the district for mercury since the early-mid 1970's. There has
been some interest shown in recent times as a potential area for gold
exploration. Rytuba reports that total production for the district has
been around 5,900 flasks of mercury.
GEOLOGICAL SETTING
The rocks of the area include complexly folded and faulted
sedimentary and volcanic rocks of pre-Tertiary age. These include Permian
volcanic rocks which grade upward into clastic sedimentary rocks, mafic
volcanic rocks, and shaly limestone of Permian or Triassic age which are
overlain by Early Cretaceous conglomerate, siltstone and sandstone. There
is an extensive section of Tertiary rocks in the district. These consist
of an earlier series of basalt and rhyolite flows, tuffs and tuffaceous
sediments which were later intruded by mafic dikes and, still later,
intruded by silicic plugs and dikes.
ORE DEPOSITS
Most of the production has come from ore bodies lying in or along one
of several northerly trending diabase dikes, but some production has come
from ore localized along shear zones and high-angle normal faults in
rhyolite and rhyolitic tuff. The ore bodies in the diabase have been
Bottle Creek District - 1

comparatively small but of high-grade, some of the early production in the
district running over LOO pounds of mercury per ton.
Three mines out of thirteen recognized mines and prospects in the
district have produced the majority of mercury in the district. They are:
the Blue Can Mine, recorded production of 1,733 flasks; the McAdoo Mine
with a recorded production of 1,671 flasks; and the Red Ore Mine with a
recorded production of 1,433 flasks. Coming in a distant fourth is the
White Peaks Mine with a recorded production of 773 flasks. The remainder
of the mines and prospects have either produced nothing or generally less
than LO flasks. Two exceptions to this statement are the Birthday Mine
with a production of 270 flasks and the Niebuhr Mine with a production of
40 flasks.
The Blue Can Mine typifies those mines associated with diabase dikes.
This mine initially consisted of nine claims and connected with the
workings of the McAdoo Mine to the north. Early in the history of the
property a 50-ton Gould rotary furnace was installed. It was this furnace
which roasted the ore that produced most of the mercury from this
property. By 1944 most of the ore had been mined and processed and there
has been no recorded production since this time.
According to Bailey and Phoenix the mine was developed by a 135-foot
shaft and connecting drifts on the 32, 47, 86, 110, and 135 foot levels.
Underground workings total more than 2,000 feet, with about half making up
the 86-foot level. A l l the stopes lay above the two lowest levels.
Bailey and Phoenix state that the ore bodies were localized in
fractured parts of a north-striking diabase dike which dips westward and
intrudes argillically altered pre-Tertiary and Tertiary sequences of
sediments, tuffs and flows. They divided the ore bodies into two groups-an
eastern group, in which the ore was localized along a 3 to 15-foot wide
diabase dike that extends from the surface to a few feet below the 86-foot
level. The cinnabar is confined to the dike and adjacent wallrocks. Then
they had a western group of deposits in which ore was localized along an
apex between a vertical dike and a heavy layer of clay or gouge which dips
at a low angle to the east. In this setting high-grade cinnabar almost
completely replaced a diabase dike.
The Red Ore Mine represents a second type of deposit found within the
district. The property consists of eight claims located in the
southwestern part of the district. Initial discovery was made in 1937 at
which time a few flasks were recovered. But it wasn't until 1956 that the
major ore bodies were developed and mined. From 1956 to 1958 over 1,000
flasks of mercury were produced from a mill located on the White Peaks
Mine. This mill consisted of a 70-ton gravity-flotation concentrator and a
retort.
Two ore bodies were developed by open-pit mining. They had a maximum
thickness of 15 feet and occurred in tuffs and an altered basalt flow
which were cut by numerous calcite veins. The cinnabar occurred as
veinlets, often in association with calcite. Orpiment locally occurred in
"white" veins, and opaline silica veins up to two inches wide were
sometimes present. Argillic alteration-is present and is most intense
along a steeply dipping, northerly trending fault which defines the west
boundary of the pit. The open pit has a depth of 70 feet and a length of
about 400 feet.
A third type of deposit is expoged at the Niebuh; Mine. This mine was
developed along a fault striking N55 E and dipping 65 SE in a brecciated
and silicified rhyolite. Cinnabar occurs as coatings and disseminations in
Bottle Creek District - 2

the sheared rhyolite. Workings are not very extensive, consisting of a
60-foot inclined shaft and several open cuts. An open cut 1,400 feet
northwest of the shaft exposed cinnabar in a fault zone developed in
phylli te.
Current activity has been restricted to gold exploration and as of
1984 NASSAU Exploration of Reno had a block of claims which covered the
ridges on the west side of the district. Some drilling has been done and
rumor has it that minor gold mineralization was encountered.
Approximately 14 miles north of the Bottle Creek district, and about
4 miles north of State Route 140 in Sand Canyon, is an isolated mercury
property called the Red Arrow. Lacking a better place to put it, it was
decided to include it under the Bottle Creek district. The workings are
shown on the Quinn River Crossing 15 minute topographic map. Nothing is
known about the history of the property. The workings set on two knobs
about 114 mile apart. On the southernmost knob there is an open stope,
through to the surface which connects to an adit that was collared on the
east side of the hill. The adit is caved at the mouth. The remains of a
2-pipe Rossi retort is located just below the mouth of the caved adit. On
the northern most knob there is a series of three trenches on the east
side. These trenches are approximately 100 to 150 feet long by about 15
feet in width. In the southwest corner of the most northern trench is a
shaft. It is not known how deep the shaft is. There are a few dozen cuts
in between these two knobs.
The workings appear to be in a mixture of rhyolite and andesite. In
places the rhyolite looks like a dike and in other places the andesite
looks like a dike. It appears from the extent of the workings and calcine
material around the retort that there has been some production from the
property, possibly 25 flasks or so (?).
The area was newly staked in 1983 by Asarco. It is thought that they
are looking for gold.
SELECTED REFERENCES
Bailey, E. H., and Phoenix, D. A. (1944) Quicksilver deposits in Nevada:
NBMG Bull. 41, p. 80-90.
Bailey, E. H., Rytuba, J. J., and Jones, R. B. Unpublished data on
Nevada's quicksilver districts. Incomplete set of data at offices of
Nevada Bureau of Mines and Geology.
Willden, R. (1964) Geology and mineral deposits of Humboldt County,
Nevada: NBMG Bull. 59, 154 p.
Bottle Creek District - 3

LOCATION
BUFFALO MOUNTAIN MINING AREA
Buffalo Mountain is located at the north end of the Tobin Range,
north of Smelser Pass. It extends northeast to Lone Tree Hill near
Interstate Highway 80, 10 km northwest of Valmy. Mines and prospects
occur on both the east and west sides of the mountain. The area is joined
on the south by the Iron Hat mining district, in which are included the
properties just north of Smelser Pass.
HISTORY
Little is known concerning the history of the mines and prospects on
Buffalo Mountain. The mines on Lone Tree Hill probably were worked in the
early 1900's. Manganese occurrences were known in southeastern Humboldt
and northeastern Pershing County in the early 19001s, but most of the
production, and probably the exploration of minor properties, was done
during or between the two world wars. Recent rotary drilling (1984) at
copper prospects on the southeastern flank of Buffalo Mountain and in the
vicinity of Smelser Pass (Iron Hat district) may have been in search of
precious metals. Rotary drilling in S33,T34N,R42E and Sl,T33N,R41E, at
the northeast end of Buffalo Mountain is also reported to be for precious
metals.
GEOLOGIC SETTING
Buffalo Mountain is underlain by Pennsylvanian and Permian rocks of
the Havallah sequence which are intruded by a large mass of coarsely
crystalline granodiorite (Cretaceous) that makes up most of the
southwestern half of the range (Willden, 1964, p. 92).
ORE DEPOSITS
Several minor manganese deposits are reported from Buffalo Mountain,
especially along the northwestern side and at the northern end of the
range. Six individual properties are reported (Southern Pacific Co.,
1964, p. 96; Southern Pacific Co., 1959), none of them are believed to
have been productive (Willden, 1964, p. 93). Manganese deposits in marine
rocks of the Havellah sequence are syngenetic deposits. Many of them are
stratabound, although epigenetic deposits and occurrences are also known,
and are believed to represent the plumbing system of the submarine hot
springs that deposited the manganese (Snyder, 1978, p. 743). Manganese
prospects are reported in S5, 6, 8 and-9, T33N,R41E, in S33,T34,R41E, and
in S19 and 30,T34N,R42E (Southern Pacific Co., 1964, p. 96).
Numerous prospect pits, bulldozer cuts, fnd shallow underground
workings are located in an area of about 2 km at the northeast end of
Buffalo Mountain. The prospects consist of gossan, oxide-copper minerals,
and spotty vein quartz along high-angle or thrust faults cutting chert of
the Havallah sequence. Dikes and small intrusive masses of Cretaceous
Buffalo Mountain District - 1

quartz monzonite intrude the Havallah nearby. Sparse pyrite and
chalcopyrite are present at one locality, and galena at another. Silver
and gold mineralization is reported from prospects in SE/4 SE/4
S36,T34N,R41E, and suspected elsewhere.
Mines and prospects on Lone Tree Hill northeast of the northeast end
of Buffalo Mountain explore high-angle fault zones in Ordovician Valmy
Quartzite. Iron oxides and sparse oxide copper minerals occur with
chalcedonic quartz along 1 rn wide crush zones. The workings are probably
for precious metals.
A small copper prospect (vein quartz and oxide copper minerals) is
present in quartz monzonite on the southeastern side of Buffalo Mountain.
Nearby copper prospects to the south are included in the Iron Hat mining
district.
SELECTED REFERENCES
Snyder, W. S. (1978) Manganese deposited by submarine hot springs in
chert-greenstone complexes, western United States: Geology, v. 6, p.
741-744.
Southern Pacific Co. (1959) Areal economic geology, T33-34, R41-42E.
Southern Pacific Co. (1954) Minerals for industry, v. 1, p. 96.
Willden, Ronald (1964) Geology and mineral deposits of Humboldt County,
Nevada: Nevada Bureau of Mines and Geology Bulletin 59.
Buffalo Mountain District - 2

LOCATION
COTTONWOOD DISTRICT
The Cottonwood district includes all of the mines and prospects
situated in the Fox Range. The Fox Range lies immediately north of Pyramid
Lake and separates the Smoke Creek Desert on the west from the San Emidio
Desert on the east.
HISTORY
According to Bonham (Bonham, 1969, p. 53) there has been intermittent
production from this district since the 1870's. The only recorded
production Bonham (op. cit.) could find was 1,500 lbs of lead produced in
1929. He judged, from the extent of workings, that production may have
been around $100,000, mainly from lead, copper, zinc, gold, and silver.
GEOLOGIC SETTING
The oldest rocks in the Fox Range are Mesozoic metasedimentary rocks,
chiefly slate, phyllite, impure quartzite, and marble. These rocks were
intruded by Mesozoic granodiorite stocks. The largest stock is exposed in
the northern part of the range. It is a coarse-grained foliated
granodiorite containing moderately abundant hornblende and biotite. The
granodiorite stocks exposed in the southern part of the range are medium
grained, unfoliated, and contain less hornblende and biotite than the
northern stock. Summary taken from Bonham (op. cit., p. 56).
"Overlying the Mesozoic rocks unconformably is a moderately thick
sequence of Tertiary volcanic and sedimentary rocks of probable Miocene
age. The volcanic rocks range from rhyolite to basalt, with basalt and
andesite flows, mud flow breccia and tuffs greatly predominating.
Intercalated with the basaltic and andesitic rocks, particularly in the
southern part of the range are diatomites, sandstone and conglomerate, and
siliceous vitric tuffs" (Bonham, op. cit.).
ORE DEPOSITS
Cottonwood Creek Area: Three sets of workings are found in this area.
--
All are located on the Smith Canyon 7 1/2 minute topographic map and are
found near the center, east edge of the map. Access to these workings is
via a road up Cottonwood Creek, on the east side of the range.
The most northerly workings consists of an inclined shaft (at
about-35') which trends ~20'~. According to Bonham (op. cit., p. 57) this
is the Silver Fox prospect. At the time-of the current visit the shaft was
somewhat open and judging from the size of the dump, workings here may be
200-400 feet in extent. This shaft was sunk on a white quartz vein in
which iron and copper oxides can be seen. The quartz vein is associated
with a granitic dike and the county rock here is a phyllite. Sample 2404
was collected here. Bonham identified (op. cit.) jamesonite, tetrahedrite,
and sphalerite in the vein material.
Cottonwood District - 1

Something less than 1/2 mile south-southeast of the above workings is
another set of workings. According to the sign nailed to a timber at the
mouth of an adit this is the Modoc Mines property. The location and
description also fits Bonham's (op. cit., p. 56) description of this
property.
At the time of the current visit only one adit and a small open cut
were observed. This adit trends ~30'~ and there appeared to be several
hundred feet of workings. Bonham (sp. cit) states that these workings
consist of three levels. The uppermost workings being several shallow pits
and a caved inclined shaft; the middle workings being a 60-foot long adit
with approximately 200 feet of drifts along the vein structure, an
inclined raise and a winze connecting to the lower level; the lower most
workings is a 180 foot adit, with 140 feet of drifting along a vein and an
inclined winze. It is thought that the current observations were at the
lower most workings of Bonham's description. Mineralization is associated
with a white quartz vein which in turn, is associated with a granitic
dike. Where observed by the writer these were enclosed in a medium gray
colored limestone. Bonham observed that the quartz vein and granitic dike,
in places, were hosted by a schistose argillite and a phyllite. The quartz
vein contains sphalerite, tetrahedrite, and pyrite. Bonham also noted that
the quartz had been emplaced along a fault zone which generally marks the
contact between the granitic dike and the metasediments. The strike of the
vein varies from east-west to ~45'~ and the dip varies between 40 and
70'~~ (Bonham, op. ci t .) .
There has been no known production from any of these properties in
Cottonwood Canyon.
The top0 map shows a third set of workings approximately a mile down
canyon from the above two sets of workings. Map symbols indicate two adits
but none could be found. There was one place along the north side of the
road where an adit may have been. If so then it is caved. Bonham mentions
no such workings here in his paper.
--
Rodeo Canyon: On the Fox Range 15 minute topographic map there are
some prospects shown up towards the head of what the writer would call the
south-fork of Rodeo creek. They lie on or close to the section line
between S5 & 8, T29N,R22E. These prospects were not visited as there was a
locked gate at the mouth of Rodeo Canyon and this would have necessitated
a walk of 3-4 miles to reach the prospects. Considering the time involved
and extent (or lack of) of the workings it was decided not to take the
time to visit these prospects. However, Bonham (op. cit.) has a write-up
on this area. He states that workings consisting of several trenches,
shallow pits, and a 30 foot deep inclined shaft, all located along a
contact between a granodiorite and metasediments. Bonham observed a small
amount of tactite and a very minor amount of scheelite. All the scheelite
observed was in the tactite and by visual estimate did not exceed 0.5% W03.
Bonham also mentions an occurrence of lead and silver that was
originally mentioned by Hill (Hill, 191.5, p. 193). According to Hill the
occurrence consisted of a 14 inch quartz vein. Bonham could not find this
occurrence.
Cottonwood District - 2

--
Wild Horse Canyon: The Wild Horse Mine is located on the Fox Range 15
minute topographic quadrangle map. It is near the head of Wild Horse
Canyon in the south central portion of S2,T29N,R21E. At the time of the
writer's visit there was a locked gate approximately 2 1/2 to 3 miles down
the road from the mine.
Bonham (Bonham and Papke, 1969, p. 58-59) has an excellent
description of the workings and geology of the mine area. "Workings
consist of six adits, several shallow shafts and pits, and an open stope
20 to 30 feet deep, 2 to 4 feet wide and approximately 100 feet long. The
accessible adits are short, not exceeding 150 feet in length. The entrance
to the main adit level is located to the immediate east and in back of a
new cabidhouse that is in the process of being built and is about 20 feet
above the elevation of the canyon floor. This adit is several hundred feet
in length ..." The mouth was totally caved at the time of the current
visit. There has been no mining activity here for some time, although
there is a late model house trailer setting at the mine site as well as
new construction - mentioned above. There are also numerous white PVC
claim posts in the mine area but no "paper" could be found. The workings
as described by Bonham were the same as observed during the current visit.
A summary of previous activity, dating back to 1912, is given by
Overton, p. 60-61.
Continuing with Bonham's description of the area, "The workings
explore two sets of mineralized faults, which cut a granodiorite stock
intruding Mesozoic metasedimentary rocks and hornblende gabbro. One set of
mineralizes faults $rends about ~ 6 0 ' and ~ dips 15' to 38 SW. The other set
trends N60 E to N80 E and dips vary from vertical to 60 NE. The
mineralized fault zones consist of fractures, sheared, and sericitized
granodiorite and range in thickness from 2 to 20 feet. Quartz veins and
stringers up to 2 feet thick occur in the fault zones. Pyrite and small
amounts of arsenopyrite occur as disseminations and pods in both the
altered granodiorite of the mineralized zones and in the vein quartz ..."
Sample 82443 collected here. Around mouth of main adit and from
"high-grade" pile. Pictures #3 through 5 taken here.
SELECTED REFERENCES
Bonham, H. F., Jr., and Papke, K. G. (1969) Geology and mineral deposits
of Washoe and Storey Counties, Nevada: Nevada Bureau of Mines and
Geology Bulletin 70, 140 p.
Hill, J. M. (1915) Some mining districts in northeastern California and
northwestern Nevada: U.S. Geological Survey Bulletin 594.
Lincoln, F. C. (1923) Mining districts and mineral resources of Nevada:
Reprint Ed. 1970, Douglas McDonald Pub., p. 233-234.
Overton, T. D. (1947) Mineral resources of Douglas, Ormsby and Washoe
Counties, Nevada: Nevada Bureau of Mines and Geology Bulletin 46, p.
60-61.
Cottonwood District - 3

LOCATION
DEEPHOLE DISTRICT
The Deephole district lies in northern Washoe County, directly north
of Gerlach, and encompasses the mines and prospects of the Granite Range.
HISTORY
Gold ore was reportedly discovered in the district in 1908 but no
production was reported from any property until 1938, when the Mountain
View Mine was discovered. Total recorded production from the district is
$92,453, essentially all of which was produced from the Mountain View Mine
(taken from Bonham, 1969, p. 59).
GEOLOGIC SETTING
A good summary of the geology of the Granite range, in which the
Deephole district is located, is given by Bonham (Bonham, 1969, p. 59) and
it will not be discussed here.
ORE DEPOSITS
Of the five known properties in the district, four were visited, one
was not. Of the four properties visited, samples were collected at three
and pictures taken at two.
Mountain View Mine: Located on the Squaw Valley 7 112 minute
topographic map, in the SE/4, SS,T34N,R22E. No pictures were taken and no
sample collected. The whole district has about the same character and the
mineralization has been fairly well documented by Bonham (Bonham, 1969, p.
59 and Overton, 1947, p. 61). Another item of note is that in Bonham's
work this property is discussed in the text portion as the Mountain View
Mine, but, on the Mineral Resources Map it is referred to as the Lakeview
Mine. These are one in the same mine but there is no cross reference to
indicate this fact.
Basic geology in the immediate mine area is of contact metamorphic
character. The metamorphic unit is a black schistose hornfels containing
quartz and calcite vein material. The intrusive unit is a granodiorlte.
Mineralization is associated with the vein material and lying on the dumps
was a fair amount of copper oxide materlal. Bonham (op. cit.) states that
this property produced over $75,000 worth of ore. Most of this was gold
but that something over $10,000 was in silver. Minor amounts of copper and
lead were also produced.
Workings observed consisted of two.adits, both partially open, both
trend east. The lower adit is the longer of the two and it may be upwards
of a 1,000 feet in length(?). The upper adit appeared to be about 200 feet
in length. At the south edge of the upper adit there's a sort of
"shaftW/open cut. Bonham (op. cit.) claims that there are several hundred
feet of drifts, winzes, and raises along the vein zone at this property.
Deephole District - 1

There are several maps in the Bureau's Mining District Files section
on this property which shows the extent(?) and layout of the underground
workings.
Silver Bell Mine: Located on the Squaw Valley 7 112 minute
topographic map, in the NE/4, S8,T32N,R22E. This places it a little over
114 mile south-southeast of the Mountain View Mine. Workings at the time
the property was visited consisted of two adits and a few small cuts,
above the upper adit, that are spread out along the slope of the hill. The
lower adit was open, trends approximately ~ 8 0 ' and ~ appeared to be several
hundred feet long. The upper adit was also open, trends approximately
0
N87 E and appeared to be a few hundred feet long. The upper adit is
approximately 200 feet in elevation above the lower adit.
The deposit can be classified as contact metamorphic. Principal rock
units consist of a black hornfels associated with a granodiorite
intrusive. The dumps from both adits are principally black hornfels and it
appears that neither adit reached the contact with the granodiorite. Dump
material from the upper adit contains a small amount of white quartz and
an even smaller amount of rhyolitic dike(?) material. It is thought that
the quartz is probably associated with this dike(?). There may possibly
have been some small production from this mine but no records of such are
known.
Sample /I2409 was collected at this property and picture /I9 was taken
here.
Mountain View Tungsten Prospect: Located on the Squaw Valley 7 112
minute topographic map in the sE/4, S8,T34N,R22E. The property lies about
314 of a mile south-southeast of the Silver Bell Mine. Again, as with the
Mountain View Mine, there is a problem with names with this property. In
Bonham's text (op. cit.) on the discussion of this property it is referred
to as the Mountain View Tungsten Prospect. On his Mineral Resources map it
is referred to as the Lakeview tungsten prospect. No cross-reference or
explanation is given. Gianella (Nevada Bureau of Mines and Geology Mining
District files iI311) refers to this property as the Nash Claims.
According to Bonham (op. cit.) at the time of his visit to the
property, circa early 19601s(?), "the workings ... consisted of four open
cuts, none more than 20 feet in length, which explore a zone approximately
60 feet wide of interlayered schistose metavolcanics, marble, tactite, and
silicated limestone ...". A t the time of the current visit these open cuts
could still be seen but were badly sloughed in. In addition to these cuts
a small, open adit has been driven (after Bonham's visit). It trends ~ 6 0 ' ~
and may be approximately a LOO feet long. Heavily iron-stained hornfels
and quartz make up the dump. Sample /I2408 was collected here.
Mineralization as described by Bonham (op. cit.), consists of
scheelite, pyrite, and chalcopyrite. The scheelite occurs as
disseminations within tactite and in sugary quartz veins which cut the
tactite. Bonham (op. cit.) visually estimated grades in excess of 1% WO
in some places. The pyrite and chalcopyrite occur as disseminations witzin
the tactite.
Copper King Prospect: Located on-the Squaw Valley 7 112 minute
topographic map, approximately in the north corner of S16 and
17,T34N,R22E. It's a little over 113 mile south east of the Mountain View
Tungsten prospect.
Development consists of a "cat" road up the side of the mountain
which terminates just beyond a small pendant. There may have been a short
Deephole District - 2

adit driven into the pendant(?). If so it's caved. A small pit has been
blasted into the top edge of the pendandgranodiorite contact. The pendant
proper is small, being about 50 feet in width and approximately 200 feet
in vertical extent. The "cat" road exposes what appears to be the lower
edge of the pendant and, minor digging and blasting has opened up the
surficial outcrop. The pendant proper is a schistose hornfels enclosed by
granodiorite. The obvious mineralization is copper oxides. These are
fairly abundant and occur along fractures in both the hornfels and
granodiorite. However, most of the mineralization seems to be in the
granodiorite along the contact with the hornfels. Of the two vertical
contacts exposed, the north contact area has the greatest concentration of
copper oxides. There was also some white, iron-stained, quartz vein
material lying on the surface and in the "dump" material but none was
observed in place.
Picture #8 and sample #2407 were taken and collected here.
Cottonwod Creek Prospect: Located on the Banjo 7 1/2 minute
topographic map, in the SW corner, S36,T35NJR22E. This area was not
visited during- the current program as the road was washed out and it
wasn't feasible to walk in and examine the prospect. Bonham (op. cit.) has
a small write-up on this property which is quoted verbatim: "Several
long-idle prospects are located in a pendant of re-crystallized limestone
at the head of Cottonwood Creek. Several shallow shafts and prospect pits
have been sunk on narrow veins in the limestone. The vein material
consists largely of a mixture of iron oxides and calcite with minor
amounts of malachite and no visible sulfide minerals. According to old
residents of Gerlach, a small amount of silver ore was produced from these
old workings, but there is no recorded production".
SELECTED REFERENCES
Bonham, H. F., and Papke, K. G. (1969) Geology and mineral deposits of
Washoe and Storey Counties, Nevada: Nevada Bureau of Mines and Geology
Bulletin 70, 139 p.
Lincoln, F. C. (1923) Mining districts and mineral resources of Nevada, p.
234.
Nevada Bureau of Mines; mining district files #311.
Overton, T. D. (1947) Mineral resources of Douglas, Ormsby, and Washoe
Counties, Nevada: Nevada Bureau of Mines and Geology Bulletin 46, 91 p.
Deephole District - 3

LOCATION
DESERT DISTRICT
The Desert district is in the northeastern Hot Springs Mountains in
northwestern Churchill County about 30 miles north-northwest of the town
of Fallon. The district can be reached by desert roads that lead to the
west from U.S. Highway 95 at a point north of Parran, south from
Interstate 80 at the Jessup exit, or east from Interstate 80 at the Brady
Host Springs exit. The mines of the district are located east of Desert
Peak and south of Cinnabar Bill on the western edge of the Carson Sink.
HISTORY
The principal mine of the district, the Desert Queen, is said to have
been discovered in 1849 by emigrants traveling the trail along the east
side of the Hot Springs mountains (Vanderburg, 1940). The mine was
reported to have been worked in the early 1860fs, and a two-stamp mill was
built on the flat to the east in 1863 (Vanderburg, 1940).
Production is recorded for the Desert district in 1883, 1884, and
again in 1938 and 1939. The total recorded production, through 1940, is
only $25,123, all in gold. There has been claim staking in the district
recently, but there is no evidence of current mining activity.
GEOLOGIC SETTING
The mines in the Desert district are developed in a body of diorite
that is overlain by silicified rhyolite tuff. Both of these units are
uncomformably overlain by a sequence of basalt flows, tuffs, and
interlayered sedimentary deposits. The structure of the range is dominated
by a multitude of high-angle faults and much of the bedrock of the range
is mantled by wind-blown sand (Willden and Speed, 1974).
ORE DEPOSITS
The mines in the Desert district are developed on narrow quartz veins
that occupy shear zones in diorite. The veins are composed of white
quartz, usually brecciated, that is stained on outcrop with iron oxides
and green copper minerals. Clots of chalcopyrite and a dark sulfide
(possibly tetrahedrite) can be found in unoxidized vein material. The
veins occupy northwest-trending shear zones, dips vary from 45 degrees to
the northeast to 55 degrees to the southwest. Individual veins range from
a few inches up to four feet in thickness, the shear zones are up to 25
feet in thickness. Diorite in shear zones near the veins is commonly
chloritized and kaolinized.
Desert District -1

GEOCHEMICAL RELATIONSHIPS
Gold was detected in every ore sample collected from the Desert
district and occurs in association with anomalous arsenic, antimony, and
mercury. Four of the ores contained high amounts of boron indicating,
perhaps, that tourmaline is present as an alteration mineral. Trace
amounts of tungsten were also detected in four samples.
SELECTED REFERENCES
Vanderburg, W.O. (1940) Reconnaissance of Mining Districts in Churchill
County, Nevada: USBM IC7093.
Willden, R., and Speed, R.C. (1974) Geology and Mineral Deposits of
Churchill County, Nevada: NBMG Bull. 83.
Desert District -2

LOCATION
DISASTER DISTRICT
The Disaster district is located on the northeast and east sides of
the Kings River Valley in the Montana Mountains (Trout Creek Mountains of
Willden, but incorrectly named). The district starts, or ends, at the
Nevada-Oregon border and runs south down the range front for 10 to 15
miles. For the purposes of this report however, it's going to include all
the area on the east side of the Montana Mountains south to the Thacker
Pass road. All the mines and prospects can be located on the Disaster Peak
and Thacker Pass 15 minute topographic maps.
HISTORY
Very little information is available in the way of recorded history
on this district. It is known that small amounts of gold, silver, mercury,
and uranium have been produced. Most of the mineralization is in the form
of lode occurrences but there are also two placer gold occurrences.
Vanderburg reports that work on the placer deposits was being done in the
district as early as the late 1870's. Historically the area has received
very little attention from explorationists until the mid to late 1970's
when uranium was an attractive commodity to look for. During this time
period the entire area, as far east as McDermitt and south to State Route
140, was staked, and explored for uranium. Several areas within the
district have drill indicated reserves of uranium as a result of this
work. However, individual deposits are small and low-grade, being on the
order of 5 lb per ton U 0 Current activity is restricted to gold
exploration by Placer ~$d?*in the Ikes Canyon area and to lithium and clay
exploration by Huber Corp. in the Big Bend Spring area. It is not known
what the total production has been from the district. It is known that
about 500 tons of uranium ore has been produced; that a few ounces of gold
and silver have been produced; and that a very few flasks of mercury may
have been produced.
GEOLOGIC SETTING
Most of the range is underlain by rhyolitic to dacitic flows and
welded tuffs, but large areas of granodiorite and related intrusive rocks
occur in the northwestern part of the range. The intrusive rocks are
overlain by coarsely porphyritic basalt and unmapped thin sedimentary
units near the border and extending into Oregon. The intrusive rocks are
mainly granodiorite but their composition varies considerably, mostly in
the amount of included dark minerals. Alaskite is locally intrusive into
the granodiorite near Flat Creek. Flow units are exposed on the north side
of Thacker Pass, and the zone of flow units persists for a considerable
distance to the north, at least as far as Horse Creek.
The important structural features are some persistent normal faults
along the west front and in the northwestern part of the range. These
faults offset all the rocks of the range. The oldest is considered to be
the Moonlight fault. This is an east-dipping normal fault that has a
Disaster District - 1

displacement in excess of 2,000 feet. The China Creek fault is another
prominent fault. It is a west-dipping normal fault and it is thought by
Willden that this fault, together with other concealed faults to the west
are probably responsible for the topographic expression of the range.
ORE DEPOSITS
There are a variety of mineral occurrences throughout the district
but the Moonlight uranium mine has been, and still is, the largest dollar
producer. According to Garside, uranium mineralization occurs in a
silicified breccia zone in the hanging wall of a north-trending fault
which displaces Tertiary rhyolitic ash-flow tuffs. These rhyolitic rocks
overlie a Jurassic(?) quartz monzonite or granodiorite, which is pregent
at depth in some of the workings. The mineralized fault dips from 45 to
0
54 E near the surface, but steepens at depth as observed in an inclined
shaft .
Uranium minerals include autunite, torbernite, and gummite. These are
associated with pyrite, iron oxides, clays, quartz, and dark purple
fluorite. Autunite is reported to be more common near the surface and it
has been proposed that uraninite may be present at depth. It is thought
that production has been about 500 tons of uranium ore, assaying between
0.07 to 0.22 percent U 0 It is also thought that no profit resulted from
3 8'
the processing of this ore(?).
The most extensive workings in the district are found in Ikes Canyon.
On the top0 map these workings are called the Iron King Mine. No mention
of this mine can be found in the literature. There are about three sets of
workings in the canyon consisting of adits and shafts. They are thought to
pre-date World War 11, and collectively amount to a few hundred feet.
Newer work, done within the last 2-4 years consists of a series of drill
roads laid out up the sides of the canyon, along with numerous sites that
have been drilled. This work was done when the uranium boom was going.
Geology around the workings consists of a host rock(s) that are a mixture
of rhyolite-andesite and a very dark colored granodiorite-diorite
intrusive. Fairly narrow, gray quartz veins cuts these rocks and in some
of the vein material considerable pyrite was observed. Placer Ltd. had
just taken a lease on this property at the time of visitation. They are
looking for gold. Willden states that between these workings and those in
Horse Canyon to the south that recorded production has amounted to 1 ounce
of silver and 4 ounces of gold.
No work has been done on the placers located in Horse Creek and China
Creek for many years. According to Vanderburg, activity here dates back to
the 1870's and in 1935 there were too men working a sluicing operation on
China Creek. The operation was, in part, handicapped by lack of water.
This is the last known activity on the placers. No production has ever
been recorded from those workings but it's fairly obvious that there has
been some, although probably not much.
The Disaster Peak mercury prospect,, currently named Apollo, is
located approximately 1.5 miles southeast of Disaster Peak, on the east
ridge top of China Creek. Bailey and Phoenix state that the property was
originally developed in 1940 and 1941. In 1942 development consisted of a
northeasterly trending 95-foot adit and a second 32-foot adit lying about
25 feet above. At the time of the current visitation these adits, or sites
thereof, could not be found. What was observed was a series of E-W
Disaster District - 2

trending cuts and trenches spread out over about 118 to 114 mile. There
were about 7-10 of these cuts. Geology consists of a mixture of volcanic
rocks of basically andesitic composition but containing much glassy
material and a fair amount of rhyolitic material. Opaline silica coats
fractures in these rocks and the cinnabar, what little was seen, is
associated with this opaline silica. There has been no activity here for
some time. There has been no recorded production from the property but it
appears that a few flasks of mercury have been produced, less than lo(?).
SELECTED REFERENCES
Bailey, E. H., and Phoenix, D. A. (1944) Quicksilver deposits in Nevada:
NBMG Bull. 41, p. 100.
Garside, L. J. (1973) Radioactive mineral occurrences in Nevada: NBMG
Bull. 81, p. 58.
Vanderburg, W. 0. (1936) Placer mining in Nevada: NBMG Bull. 27, p. 93.
Willden, R. (1964) Geology and mineral deposits of Humboldt County,
Nevada: NBMG Bull. 59, 154 p.
Disaster District - 3

LOCATION
DONNELLY DISTRICT
The Donnelly district is located approximately nine miles
north-northeast of the southwest corner of Humboldt County on the west
slope of the Calico Mountains, southwest of Donnelly Peak. This places the
district on the Division Peak 7 1/2 minute topographic map. The best
access to the district is through Gerlach, past Leadville where a road
takes off to the east. Running this route brings the traveler into the
district from the north.
HISTORY
Quoting from Lincoln on the early history of the district: "The
Donnelly mine was discovered in 1910 by James Raser. He shipped a little
high-grade gold ore and in 1911 built a 5-stamp mill, which is credited
with a production of $90,000 in gold bullion. The property was operated up
to 1914. In 1919, the mine was operated by lessees. The Reeder mine to the
south is said to have made a small production with the aid of an
arrastra." According to Vanderburg, gold was discovered in 1907 by a
cowboy who located several claims and later sold them to James Raser. When
Vanderburg visited the district in 1937 there was no activity. Nothing is
known about activity in the district since Vanderburg's visit. When
visited during the current study there was no activity and hadn't been for
some years.
GEOLOGIC SETTING
According to Willden there is a Late Cretaceous, Early Tertiary
granodiorite intrusive which cover approximately 1/2 to 3/4 square mile on
the west flank of Donnelly Peak. This intrusive is bounded on the west by
a high angle fault. West of this fault, and covering the valley floor,
Wilden has mapped Quaternary alluvium. On the south and southeast edge of
the intrusive is a very small cropping of an un-named formation of
Triassic-Jurassic age composed of phyllite, slate, and fine-grained
quartzite. Wilden shows this unit being bounded on its south side by a
fault. Surrounding all of the above units, and covering several square
miles is an undivided sequence of Tertiary volcanic and sedimentary rocks.
ORE DEPOSITS
According to Vanderburg, "The ore occurs as lenses in narrow veins in
granodiorite intruded into slate and quartzite. The principal veins strike
northwest and southeast, dipping 30' northeast, and they vary in width
from a few inches to a maximum of 2 1/2 feet. The gangue is chiefly
iron-stained quartz. The gold is disseminated through the quartz in fine
particles associated with a small amount of silver." This same setting
was observed during the current visit but in addition to heavy
iron-staining a fair amount of pyrite was observed on dump material.
Donnelly District - 1

The extent of workings during Vanderburg's visit, which was a
combination of the Donnelly and Reeder properties, consisted of eight
adits along with lateral workings which total about 2,000 feet. During the
current visit it was observed that most all of these workings were caved
and have been for some time. Sample #2406 collected, and picture #7 taken
here.
SELECTED REFERENCES
Lincoln, F.C., 1923, Mining districts and mineral resources of Nevada:
Reprint 1970, Douglas McDonald pub., Verdi, NV, p. 234.
Vanderburg, W.O., 1938, Reconnaissance of mining districts in Humboldt
County, Nevada: U.S. Bur. Min. Infor. Circ. 1.C.-6995, pp. 20-21.
Willden, R., 1964, Geology and mineral deposits of Humboldt County,
Nevada: Nev. Bur. Min. Bull. 59, 154 p.
Donnelly District - 2

LOCATION
DUTCH FLAT DISTRICT
For the purposes of this report the Dutch Flat district includes all
of the southern quarter of the Hot Springs Range. This places the Dutch
Flat Mine at about the north end of the district and the Red Devil
Prospect at the south end. Then, there is an unnamed prospect on the south
east corner. Bailey and Phoenix, and also Wilden consider the district as
being only on the west slope of the range and extending from the Dutch
Flat Mine south to the Red Devil Prospect. All the mines and prospects are
on the Osgood Mountain 15-minute topographic map.
HISTORY
Placer gold was discovered in the district in 1893. It's reported
that about $200,000 in gold has been produced from the placers. This
figure is based on the price of gold at $35 per ounce. During the first
year, production was reported to have been $75,000. Most of this gold was
recovered by working with rockers. Water for the rockers was hauled in
wagons from Spring Canyon, about one mile from the placer ground. The
water was obtained from a well sunk to a depth of 25 feet. Since the late
1930's the placers have been worked intermittantly but not profitably.
Lack of a good water supply is the main problem.
Cinnabar was noted in the early placer operations, and in 1940
cinnabar was discovered in a fault zone cutting sandstone and shales. The
deposits are small and only the Dutch Flat Mine has had any significant
production. Total production for the district has probably not exceeded 90
flasks .
GEOLOGIC SETTING
The bulk of the district is composed of the Cambrian Harmony
Formation which is made up of sandstone and shales. North northeasterly
of the Dutch Flat Mine is a Tertiary granodiorite intrusive. A contact
metamorphic aureole surrounds this intrusive and may be the source of the
scheelite in the placer deposits. Asymmetrical, north plunging folds
characterize the structure in the Harmony Formation, and these are cut by
normal vertical faults which trend northeast and southwest. In the east,
southeast portion of the district is an area covered by Tertiary basaltic
and andesitic rocks. Locally this unit may include more silicic rocks and
even sedimentary rocks. In the southeastern edge of the district is a
small cropping of Ordovician Valmy Formation. In this area the unit is
composed almost entirely of a medium grgy to white quartzite.
ORE DEPOSITS
Wilden and Hotz have described the ore deposits of the district as
follows: "Two types of lode deposits of two ages are present in the area,
Dutch Flat District - 1

and the existence of a third is inferred. The oldest consists of two sets
of quartz veins that contain minor amounts of gold and base metal
sulphides. The youngest type is disseminated cinnabar in a shear zone that
is younger than the quartz veins. Contact metamorphic rocks containing
scheelite may be present in the area, but such deposits were not observed
. , the only known evidence of their existence is the scheelite and
garnet in the placer."
". . . The quartz veins occupy two northeast striking fault systems:
0
one, in the granodiorite stock, dips about 30 northwest and another, in
the sedimentary rocks, dips steeply from northwest to southeast. The veins
are generally from 3 inches to 2 feet thick, but veins as much as 8 feet
thick have been observed. Some veins exposed in the mine workings give
assay values in gold ranging from 0.01 to 0.05 ounces per ton and in
silver ranging from 0.3 to 1.5 ounces per ton. . . . it was reported that
pockets of ore running $200 in gold per 50-pound ore sack were encountered
in the El Paso Mine. Galena, sphalerite, chalcopyrite, pyrite, and
jamesonite have been identified in some vein quartz. Small amounts of
scheelite were observed in two of the quartz veins, and small pebbles of
quartz containing scheelite have been found in the slope-wash gravels."
"Cinnabar is found disseminated in a shear zone in metamorphosed
shale and feldspathic quartzite of the Harmony Formation just west og the
granodiorite stock. The shear zone strikes about N ~ O ~ E dips , from 20 to
0
35 SE and has an average width of about 5 feet over a length of 900 feet.
. . . Cinnabar is disseminated throughout the shear zone and locally in
the undisturbed sedimentary rocks on either side of the shear zone. . . .
The average grade of the mined material was about 20 pounds of mercury per
ton."
"Two types of placer deposits are present in the area; stream
deposits containing water-transported material, and slope-wash deposits
containing material weathered from rocks in the immediate vicinity. The
stream-transported material occurs in the bottoms of the larger canyons
and on the alluvial fan below the mouth of Sodaris Canyon . . . The stream
deposits range in depth from LO feet in the upper parts of the canyons to
35 feet at the mouth of Sodaris Canyon, with an average depth of about 20
feet. The depth of the alluvial fan below the mouth of the canyon is known
from a few scattered prospect pits to range from 12 to 90 feet."
"The slope-wash deposits are found on both sides of El Paso Gulch to
a height of as much as 50 feet above the creek bottom. The slope-wash
deposits, as the term is used here, include some stream-transported
material which was left on the sides of the canyons as the streams cut
down through bedrock. . . . The slope-wash deposits range in depth from 5
to about 25 feet with an average vertical depth to bedrock of 12 feet."
Current activity in the district is non-existent. There is one new
block of claims staked along the range front between Sodaris and Spring
Canyons. The claims were staked in February, 1985 but there (April, 1985)
has been no physical work done on them.
Dutch Flat DLstrict - 2

SELECTED REFERENCES
Bailey, E. H. and Phoenix, D. A. (1944) Quicksilver deposits in Nevada:
Nevada Bureau of Mines and Geology Bulletin 41, p. 90-91.
Bailey, E. H., Rytuba, J. J., and Jones, R. B. Unpublished data on
Nevada's quicksilver districts: Incomplete copy at offices of Nevada
Bureau of Mines and Geology.
Johnson, M. G., (1973) Placer gold deposits of Nevada: U.S.G.S. Bulletin
1356, p. 30-31.
Vanderburg, W. 0. (1936) Placer mining in Nevada: Nevada Bureau of Mines
and Geology Bulletin 27, p. 94-96.
Willden, R. (1964) Geology and mineral deposits of Humboldt County,
Nevada: Nevada Bureau of Mines and Geology Bulletin 59, 154 p.
Willden, R., and Hotz, P. E. (1955) A gold-scheelite-cinnabar placer in
Humboldt County, Nevada: Econ. Geol., v. 50, no. 7, p. 661-668.
Dutch Flat District - 3

LOCATION
FARRELL DISTRICT
The Farrell district is located in the vicinity of Stonehouse
Canyon on the eastern side of the northern Seven Troughs range,
central Pershing County.
The mines of the district are clustered in two distinct and
separate localities, one at the head of Wildcat Canyon in Sections
16 and 17, T21N, R29E, the other southwest of the old Farrell tom-
site in Sections 28, 29, 32, and 33, T31N, R29E. Prospects also
occur to the west in the upper drainages of both Stonehouse and
American Flat Canyons. The Farrell district is usually included
within the Seven Troughs district which lies to the south. The
mineral occurrences within the two districts are, however, distinct
enough to warrant separate consideration.
HISTORY
The first mines in this district were discovered in 1863
(Lincoln, 1923). The original name was Stonehouse district and the
first discoveries were probably made near the Wildcat Mine in
Wildcat Canyon. No production is recorded for this early period,
however, and the district was inactive until 1907 when discoveries
at Seven Troughs to the south revived interest in the entire area.
Prospects south of Stonehouse Canyon date from this second period of
activity. The camp of Farrell was laid out near the mouth of
Stonehouse Canyon, and the district was renamed Farrell. Although
there are reports of rich ore being mined, only some $50,000 is
credited to production from this district through 1936 (Vanderburg,
1936). At the time of our examination (June, September, 1984), at
least two major companies were conducting exploration work in the
district, and most of the area was under claim.
GEOLOGIC SETTING
The northwestern part of the Seven Troughs range, including a
belt that extends east across the range to the mouth of Stonehouse
Canyon, is underlain by Triassic and Jurassic sedimentary rocks that
have been intruded and locally metamorphosed by Cretaceous grano-
diorite. These rocks are bordered on their south side, south of
Stonehouse Canyon, by a thick sequence of andesitic volcanic rocks.
To the north of Stonehouse Canyon, the older metamorphic rocks and
andesites are overlain by rhyolite flows that interfinger and
intrude the andesitic rocks. Some of th.e prominent ridges in the
rhyolite outcrops near the Wildcat Mine are underlain by silicified
rhyolite breccia.
Farre11 District - 1

ORE DEPOSITS
Most of the mineralization in the Farrell district is asso-
ciated with northeast-trending shear zones which cut rhyolite and
andesittc wallrocks. Some areas of alteration and mineralization
occur in granodiortte and metamorphic rocks but these are usually
near contacts with the volcanics. Wallrocks are commonly kaolinized
and silicified and the veins are bordered by zones of wallrock laced
with chalcedony and quartz. Workings at the Wildcat Mine expose a
N55E shear zone in kaolinized rhyolite, rhyolite breccias crop out
east of the mine. The Wildcat vein consists of pods of brecciated
chalcedonic material cemented by later silica. Both fine-grained
sulfides and free gold are present. To the south, in the area south
of Farrell townsite, fluorite occurs as a late-stage filling in the
chalcedonic veins. The fluorite-bearing veins follow a shear zone in
hornfels and are associated with a rhyolite dike which also follows
the shear zone.
GEOCHEMICAL RELATIONSHIPS
Free gold was seen in several samples of ore collected from
this district and silver values in these samples ranged from trace
to just under 10 oz. Arsenic values were spotty but generally
moderate to high and antimony values were uniformly low. Base metals
were low in all samples but molybdenum and tungstenwere present in
low amounts in several samples. Fluorite was noted in the prospects
near the camp of Farrell and barium was moderately high in samples
from this area. The geochemical association appears to be gold,
silver, and arsenic, with low molybdenum and tungsten.
SELECTED REFERENCES
Johnson, M.G. (1977) Geology and Mineral Deposits of Pershing
County, Nevada: NBMG Bull. 89.
Lincoln, F.C. (1923) Mining Districts and Mineral Resources of
Nevada: Nevada Newsletter Publishing Co., Reno.
Ransome, F.L. (1909) Notes on Some Mining Districts in Humboldt
County, Nevada: USGS Bull. 414.
Shamberger, H.A. (1972) Seven Troughs: Historic Mining Camps of
Nevada, No. 3, Nevada Historical Press, Carson City.
Thompson, T.H., and West, A.A. (1881) History of Nevada:
Howell-North [I9581 Berkeley. .
Vanderburg, W.O. (1936) Reconnaissance of Mining Districts in
Pershing County, Nevada: USBM IC 6902.
Farrell District - 2

LOCATION
GOLCONDA DISTRICT
The Golconda mining district is generally centered on the town of
Golconda, located 27 km east of Winnemucca. The district is located
adjacent to the west of the Iron Point mining district, and includes
properties near Golconda Summit on U.S. Interstate 80, in the group of
hills south of the tom of Golconda, and at the extreme southern end of
the Osgood Mountains.
HISTORY
The district is named for the town and railroad station of Golconda.
It was first known as Greggsville, for W.C. Gregg, who discovered and
organized the district in 1866 (Carlson, 1974). Gold was first discovered
in 1866 on Kramer Hill (about 3 km southwest of the town) and minor
amounts were produced through the early 1900's. The tungsten-manganese
deposits about 5 km east of town were discovered at the same time; the
deposits were an important source of tungsten from 1941 to 1945. A
disseminated gold deposit (the Preble deposit) was discovered in 1972 in
the southern Osgood Mountains, about 10 km northeast of the town of
Golconda. Mineral exploration for precious metals has been conducted on
Kramer Hill and south of Golconda Summit. A small amount of bulk-mineable
ore may have been developed at Kramer Hill.
GEOLOGIC SETTING
The Golconda mining district is almost entirely within the Golconda 7
1/2-minute quadrangle. The geologic map of this quadrangle (Erickson and
Marsh, 1974) indicates that much of the bedrock exposure in the district
consist of Cambrian to Permian sedimentary and volcanic rocks. The
Cambrian rocks consist of quartzite, limestone, and siltstone.
Pennsylvanian and Permian rocks are limestone and conglomerate deposited
within the Antler highland (see Stewart, 1980, p. 48), and siliceous and
volcanic eugeosynclinal rocks of the Pumpernickel Formation. These rock
units are cut by Cretaceous dikes, sills, and small intrusive masses of
quartz diorite, quartz porphyry, and granodiorite. Mafic to
intermediate-composition Tertiary volcanic rocks are present locally, but
are usually unmineralized. Quaternary hot spring deposits (travertine)
containing tungsten and manganese are present near the range front east of
Golconda.
ORE DEPOSITS .
The major production from the district has been 83,739 units (20
pounds each) of WO from 105,591 tons of ore between 1941 and 1945 (White,
3
1955, p. 135). Tungsten-manganese deposits occur in ferruginous and
manganiferous clay beds in Pleistocene alluvial gravels that rest on
Cambrian Preble Formation. The Preble consists primarily of phyllitic
Golconda District - 1

shale with lesser carbonaceous limestone. The deposits are overlian in
part by travertine of hot springs origin. White (1955) believes that the
travertine and tungsten-manganese deposits were deposited
contemporaneously.
The tungsten-manganese deposits occur as blankets and veins adjacent
to a fault trending N ~~OE, and the blankets dip gently to the northwest.
The deposits vary from a few inches to a few feet in thickness, and in
places are intermixed with the top of the travertine (tufa) cap. The veins
consist of linear masses of anastamosing groups of veinlets along the
northeast trend beneath the tufa caps. Both feruginous and manganiferous
vein fillings contain tungsten with accompanying quartz, barite, and
jarosite. Kerr (1940) reports that the ferruginous zones in part replace
the manganiferous phases, and there is a higher concentration of tungsten
in the ferruginous zones (Berger and Erickson, 1980).
The mineralogy of the ores in very complex. Iron occurs primarily as
goethite, lepidocrocite, and amorphous limonite minerals. Manganese occurs
as psilomelane, hollandite(?), and pyrolusite. Tungsten occurs in limonite
as an unidentified complex. Ferritungstite and tungstite may occur, but
have not been identified. Tungsten also occurs as a heterogeneous mixture
in psilomelane. Neither wolframite nor scheelite have been found in the
ores.
To the east of the tungsten-manganese deposits, altered limestone
occurs along a northeastern trend. The limestone is locally silicified,
and Kerr (1940) found a jarosite vein with quartz, barite, calcite,
psilomelane, and limonite derived from the alteration of an earlier
mineralized rock that probably contained pyrite and scheelite. This
interpretation is consistent with the reference of Berger, Silberman, and
Koski (1975) to skarn-type mineralization at depth beneath the
tungsten-manganese deposits.
Precious metal mineralization is present along north-trending faults
in Osgood Mountains Quartzite on Kramer Hill almost 3.5 km southwest of
Golconda. The most extensive workings are on the northwest slopes of
Kramer Hill. There, a NLOOE, 75'~~ shear zone has stopes to the surface
which range in width from a few cm to 2 m. This mining area is probably
the Gold Ledge Mining Co. property (Kramer Hill Mine) described by
Vanderburg (1938). He reports that from 1908 to 1915, 13,705 tons of ore
were mined having an assay value of $90,749. From this amount of ore,
$65,632.33 worth of bullion was recovered. If the values were
predominantly in gold, as reported by Vanderburg, the production would be
slightly more than 3000 ounces.
The mineralized zone at the Kramer Hill Mine(?) contains light gray,
chalcedonic silica, sparse pyrite, and free(?) gold. The same mineralized
trend continues to the south for several hundred meters. Several small
prospects on the east side of Kramer Hill which are shown on the Golconda
7.5-minute topographic map or by Erickson and Marsh (1974) were not
visited during this study but are in the same wallrock, and are probably
related to the more extensive mineralization at the Kramer Hilh Mine. A
small prospect pit in SW/4 S8, T35N, R4DE explores a NLOOW, 45 W shear
zone which contains limonite and oxide copper minerals.
Oxide copper minerals, limonite, and gossan occur in high- and
lorangle fault zones with quartz vein matter at a number of prospects
located about 2.5 km southwest of Golconda Summit. The wallrocks are
chert, greenstone, and phyllite of the Pennsylvanian Pumpernickel
Fowation (Erickson and Marsh, 1974).
Golconda District - 2

The Preble disseminated gold deposit, located in the southern Osgood
Mountains, was discovered shortly after ore-grade gold mineralization was
drilled at the present site of the Pinson Mine in the Potosi mining
district 25 km to the north. Mineralization at Preble (which is named for
the Preble railroad siding 1.5 km to the southwest) is similar to that at
the Pinson Mine and the Getchell Mine. The deposit occurs in the Cambrian
Comus Formation, a carbonate and shale unit. The mineralized unit is
reported to be in the middle portion of the formation, a carbonate debris
flow (Ed Kretschmer, oral communication, 1984). The economically viable
portion of the deposit is reported to be at or near the surface, in rocks
which have been affected by supergene oxidation. Carbonaceous, unoxidized
ore at depth is reportedly not amenable to cyanidation without
pretreatment. The gold is presumably free and of sub-micron size, as it is
at other northern Nevada sediment-hosted, disseminated-gold deposits.
Iron-oxide minerals, silica, and reportedly, rare oxide copper minerals
are present in the altered rocks. The mineralization is associated with
high-angle shear zones, has a high gold-silver ratio, and occurs in
carbonate rocks with silicification (jasperoid) and pyrite. Arsenic,
mercury, and antimony are important trace elements, and silica, kaolinite,
and calcite are important gangue minerals (Kretschmer, 1984).
Mineralization at the Preble property reportedly has a tabular form
striking northeasterly and dipping southeastward. This mineralization
occurs in a broad northeast-trending zone of shearing, brecciation, and
silicification. White calcite veins are common in limestone beds and
quartz veinlets and stockworks are abundant in shale and phyllite (Crone
and others, 1984, p. 165; Crone, 1982). The deposit contains approximately
1.8 million tons of material grading 0.063 oz of gold per ton (Mining
Record, 29 Aug 84). Precious-metal(?) mineralization at &he Maggie Neil
claim 0.5 km west of the Preble is associated with a N35 E, 25 SE fault
zone.
A small manganese prospect (Ben claim) is located in S3O,T35N,R41Ee
It occurs in Pennsylvanian Pumpernickel Formation, as do many of the
manganese properties in north central Nevada. The manganese deposits of
the Havallah sequence (which includes the Pumpernickel Formation) are
generally believed to have been deposited by submarine hot springs during
the period of deposition of the enclosing basalts, cherts, and pellitic
rocks. This property, on southern Edna Mountain, is clearly epigenetic,
(veinlets and fracture fillings?) but is probably part of the epigenetic
plumbing system related to clearly syngenetic manganese deposits (see
Snyder, 1978, p. 743).
SELECTED REFERENCES
Berger, B. R. and Erickson, R. L. (1980) Roadlog-Winnemucca to Golconda,
in unpub. Society of Economic Geologists field trip guide, p. 28-39.
-
Berger, B. R., Silberman, M. L. and Koski, R. A. (1975) K-Ar age relations
of granodiorite emplacement and tungsten and gold mineralization near
the Getchell mine, Humboldt County, Nevada-a reply: Economic Geology,
V. 70, p. 1487-1491.
Carlson, H. S. (1974) Nevada place names: University of Nevada Press,
Reno.
Golconda District - 3

Crone, W. R. (1982) The use of Fe/Mn oxide-rich fracture coatings in the
geochemical exploration for precious metal deposits, a comparison with
standard rock and soil geochemistry: Unpublished M.S. thesis,
University of Nevada-Reno .
Crone, W. R., Larson, L. T., Carpenter, R. H., Chao, T. T., and Sanzolone,
R. F. (1984) A comparison of iron oxide-rich joint coatings and rock
chips as geochemical sampling media in exploration for disseminated
gold deposits: Journal of Geochemical Exploration, v. 20, p. 161-178.
Erickson, R. L. and Marsh, S. P. (1974) Geology of the Golconda
quadrangle, Humboldt County, Nevada: U.S. Geological Survey Map
GQ-1174.
Kerr, P. F. (1940) Tungsten-bearing manganese deposit at Golconda, Nevada:
Geological Society America Bulletin, v. 51, p. 1359-1390.
Kretschmer, E. L. (1984) Guidebook geology of the Pinson Mine, Humboldt
County, Nevada, in Slavik, Greta, Geological Society of Nevada 1984
Field Trip guide~~eological Society of Nevada, Reno.
Snyder, W. S. (1978) Manganese deposited by submarine hot springs in
chert-greenstone complexes, western United States: Geology, v. 6, p.
741-744.
Stewart, J. H. (1980) Geology of Nevada: Nevada Bureau of Mines and
Geology Special Publication 4.
Vanderburg, W. 0. (1938) Reconnaissance of mining districts in Humboldt
County, Nevada: U.S. Bureau of Mines Information Circular 6995, p.
22-23.
White, D. E. (1955) Thermal springs and epithennal ore deposits: Economic
Geology, 50th Anniversary Volume, p. 99-154.
Golconda District - 4

LOCATION
GOLDBkVKS DISTRICT
The Goldbanks mining district includes mines and prospects located in
the Goldbanks Hills and vicinity, in Grass and Pleasant Valleys about 60
km south of Winnemucca. The district extends from Table Mountain on the
west to the Grass Valley road on the east, and from the northern Goldbanks
Bills south to Garden Canyon in the East Range.
HISTORY
Gold was discovered in the eastern part of the district (Goldbanks
Merger Mine) in 1907. Production from this mine and the Amonette and Frank
claims at the northeast corner of the Goldbanks Hills has been small
(Johnson, 1977, p. 56). Mercury deposits in the eastern Goldbanks Bills
were discovered about 1912 (Bailey and Phoenix, 1944, p. 169). The major
Goldbanks mercury deposit, the Goldbanks Mine, was most productive in the
World War I period, but was also mined in World War I1 and again in the
late 1960'~~ providing a recovery of more than 3,700 flasks (Bailey and
others, 1984). One ton of antimony ore was shipped from the Antimony Ike
Mine in the district in 1941.
Recent exploration activity, probably for precious metals, consists
of rotary drilling in the last few years in an area of opalite 2.5 km
north of the Goldbanks Mine and 1984 rotary drilling by Kennecott? near
the Pronto Plata Mine.
GEOLOGIC SETTING
The rocks exposed in the Goldbanks district consist of late Paleozoic
Pumpernickel and Havallah Formation, Triassic Koipato Group and
leucogranite, and Triassic Natchez Pass Formation. In the Goldbanks Hills
and east flank of the East Range, these older units are overlain by
Tertiary sedimentary rocks, and Tertiary rhyolite and Tertiary and
Quaternary basalt. The late Paleozoic rocks consist of greenstone, chert,
and argillite. The Natchez Pass Formation is mainly carbonate rocks
(Johnson, 1977). The Koipato Formation consists of rhyolitic flows and
pyroclastic rocks. The larger mercury deposits are in Tertiary sedimentary
rocks, while the less productive ones occur in Paleozoic and Triassic
sedimentary rocks. The gold mineralization occurs in rhyolite, which is
interpreted as Koipato Formation by Johnson and as Tertiary rhyolite by
Dryer (1940) and Muller and others (1951). Antimony mineralization at the
Antimony Ike Mine occurs in Paleozoic sedimentary rocks.
OR€ DEPOSITS
The Goldbanks district is predominantly a mercury district. It has
produced only very minor amounts of gold and antimony. The productive
Goldbanks District - 1
T

mercury mines are of the opalite type, consisting of blanket-like
silicified zones in Tertiary rhyolitic ash flows and breccia in the
Tertiary sedimentary rocks. Cinnabar in the ore zones in opalite is very
fine grained and disseminated. The cinnabar imparts a pink color to the
rock, which changes to gray on exposure to sunlight. The Goldbanks Mine
(S14,T30NSR38E) and the Pronto Plata Mine (S6,T30NSR38E) are of the
opalite type- A number of mercury properties are located on the east flank
of the East Range 9-15 km south of the Goldbanks Mine (between Peavine and
Garden Canyon). According to Bailey and others (1984) these properties
include the Jack Pot, Joe, and Wootan prospects. At these properties,
cinnabar occurs in faults, fractures, and breccia zones, mainly in
Triassic Natchez Pass Formation limestone, quartzite, and phyllite. These
properties haave not been very productive.
The gold properties in the Goldbanks district consist of the
Goldbanks Merger Mine and the Amonette and Frank claims. These properties
are located at the east and northeast margins of the Goldbanks Hills. At
the Goldbanks Merger Mine, gold is reported to occur in quartz veins which
trend nearly north-south and dip 45°-500 to the west (Vanderburg, 1936, p.
15). The vein matter observed on one dump is fine-grained, white to
pinkish, chalcedonic silica. The wallrocks are rhyolite, commonly strongly
silicified and pyritized. Small feldspar phenocrysts in the rhyolite are
converted to kaolinite, and rocks are reportedly kaolinized along some
shear zones (Dryer, 1940, p. 28). Vanderburg (1936, p. 15) reports that
the quartz veins are up to 2 m wide; the gold and silver values are
distributed very irregularly through the quartz (Dryer, 1940 p. 30).
Mercury is reported in amounts up to 0.005% in the -vein matter, suggesting
a genetic connection with the blanket opalite mercury deposits in the
district. Drilling to the north of the Goldbanks mercury mine was probably
in search of gold, which might be found at depth below the blanket opalite
mercury deposits.
The Antimony Ike Mine, described by Lawrence (1963, p. 184-186)
consists of a narrow quartz, stibnite, tetrahedrite, pyrite vein which
cuts gray argillite and chert of the Pumpernickel Formation near its
contact with leucogranite. A sample of ore taken from the vein assayed
16.78% antimony, 0.22 oz per ton gold and 0.25 oz per ton silver.
SELECTED REFERENCES
Bailey, E. H., and others (1984) Quicksilver deposits of Nevada:
Unpublished manuscript, Nevada Bureau of Mines and Geology.
Bailey, E. 8. and Phoenix, D. A. (1944) Quicksilver deposits in Nevada:
Nevada Bureau of Mines and Geology Bulletin 41.
Dryer, R. M. (1940) Goldbanks mining district, Pershing County, Nevada:
~evada Bureau of Mines and Geology Bulletin 33.
Johnson, M. G. (1977) Geology and mineral depoafts of Pershing County,
Nevada: Nevada Bureau of Mines and Gelogy Bulletin 89.
Lawrence, E. F. (1963) Antimony deposita of Nevada: Nevada Bureau of ~inea
and Geology Bulletin 61.
.
Goldbanks District - 2

Muller, S. W., Ferguson, 8. G., and Roberts, R. J. (1951) Geology of the
Mount Tobin Quadrangle, Nevada: U.S. Geological Survey Map GQ-7.
Vanderburg, W. 0. (1936) Reconnaissance of mining districts in Pershing
County, Nevada: U.S. Bureau of Mines Information Circular 6902.
Goldbanks District - 3

LOCATION
GOLD RUN DISTRICT
The Gold Run or Adelaide district is located on the east side of the
Sonoma Range. In this report it also includes mines and prospects in the
southern part of Edna Mountain and in Gregg Canyon to the south of
Adelaide. Manganese properties south of Gregg Canyon are included in the
Black Diablo district.
HISTORY
The district has been active since 1866, with principal production
between 1897 and 1910. Recorded output between 1907 and 1936 was valued at
$567,402 (Vanderburg, 1938, p. 26). Production of $73,116 was recorded
from the Adelaide-Crown Mine in 1940 (Couch and Carpenter, 1943, p. 69).
The district has probably been inactive since that time, except for some
recent exploration efforts. The district has received some attention
during the precious metals boom of the 1970's and 1980's. Exxon Corp.
recently (1984) drilled an area south of the Cumberland Mine in search of
precious metals. Prospects in Gregg Canyon were prospected for molybdenum
in the late 1960's and early 1970's (J.V. Tingley, oral communication,
1984), and in the early 1980fs, probably for precious metals.
GEOLOGIC SETTING
The mountain ranges in the vicinity of the Gold Run district consist
predominantly of Paleozoic rocks intruded by Mesozoic? granitic rocks.
Tertiary volcanic units locally overlie the older rocks. The principal
host rocks for mineralization are the Pennsylvanian-Permian Havallah
sequence of marine engeosynclinal rocks the Cambrian Preble Formation
(limestone and shale). Some contact metasomatic and replacement mineral
deposits are adjacent to the Mesozoic granitic intrusive rocks, one of
them in limestone of the Pennsylvanian-Permian Edna Mountain Formation.
ORE DEPOSITS
The ore deposits in the vicinity of the old townsite of Adelaide
consist of two types, typified by the Adelaide and Crown Mines. At the
Adelaide Mine, copperzinc skarns occur as metasomatic replacements of
limestone beds of the Cambrian Preble Formation. The ore consists of
phyrrhotite, chalcopyrite, spalerite, and a little galena in a gangue of
garnet, vesuvionite, diopside, calcite, orthoclase, and a very little
quartz (Ransome, 1909, p. 63). The Cumb~rland Mine is a lead-zinc-silver
metasomatic replacement deposit, containing massive galena-sphalerite-
pyrite ore with pods of quartz.
The Crown (or Adelaide Crown) Mine was worked for gold and silver,
'beginning in 1920 and continuing until at least 1942 (Ferguson, Muller,
and Roberts, 1951; Willden, 1964, table 25). The main vein, the Crown vein
Gold Run District - 1

is a due north, 70°w zone of silicification veining, and stockworks. The
wallrock is siltstone and sandstone of the Cambrian Preble Formation. The
fault zone is reported to be mineralized over a width of 3-25 m, and is
stained by iron and manganese oxides (Vanderburg, 1938, p. 27). The
mineralized zone continues to the north of the Crown Mine, where an
elongate open pit follows the zone, especiallg quartz veining in the
hanging wall. The north-trending vein dips 60 west at this open pit.
Pyrite is present in the zone, although much of it has been oxidized to
limonite. Approximately 0.5 km north of the open pit, at the John Gomes?
property, a N ~ ~ O W 3, 5 ' ~ zone ~ of wad and gossan contains spotty
occurrences of a green mica (sericite?) reported to contain nickel and
chromium (Peter Vikre, oral communication, 1984). The stoping along this
vein was, no doubt, also for precious metals. Many shallow workings are
located along a north-south zone over 5 km long, that extends from near
the Cumberland Mine to about 3 km north of the old Adelaide townsite. The
properties examined in this zone, with the exception of the Cumberland
Mine described earlier, consist of iron oxide minerals, sparse pyrite, and
spotty vein quartz or silicification along northtrending, lor to
high-angle faults in sandstone and siltstone of the Preble Formation.
These northerly-trending faults parallel a major fault which lies to the
west of the district and separates Ordovician Valmy Formation on the west
from Preble Formation on the east.
Placer mining in the Gold Run district was done in the 1860Vs, the
1920Vs, 1935, and the early 1980's. The amount of placer gold produced has
been small (Vanderburg, 1936, p. 91). Old placer workings and areas of
activity today are along Goldrun Creek near its mouth and along a creek in
S8,T34N,R40E.
A number of mines and prospects in the southern Edna Mounatins are
included within the Gold Run district. At the Copper Head property
(S14,T34N,~40E) molybdenite, pyrite and chalcopyrite occur in quartz
veinlets in a mediumgrained granodiorite. A copper prospect in
S12,T34N,R41E consists of oxide copper minerals and limonite in ribbon
chert of the late Paleozoic Havallah sequence. The Wilcox tungsten
prospect (S22,T34N,R40E) contains scheelite, pyrite, magnetite, and
chalcopyrite in a exoskarn developed in Pennsylvanian-Permian Edna
Mountain Formation limestone. The skarn zone is up to 30 m wide, but the
sulfide minerals (and possibly scheelite) are concentrated in a 1 m wide
zone.
A group of mines and prospects in Gregg Canyon about 10 km south of
Adelaide were originally probably developed for copper, lead, and silver?.
More recently the area has been the site of exploration for molybdenum and
precious metals. The old workings are along quartz veins which cut granite
porphyry or quartz monzonite. The ore minerals are sparse in the vein
quartz on the dumps. Pyrite, galena, tetrahedrite, hematite, limonite, and
chalcocite were recognized in dump samples. The granitic rocks intrude
Cambrian Preble? Formation nearby.
Gold Run District - 2

SELECTED REFERENCES
Couch, B. F. and Carpenter, J. A. (1943) Nevada's metal and mineral
production, 1859-1940 inclusive: Nevada Bureau of Mines and Geology
Bulletin 38.
Ferguson, H. G., Muller, S. W., and Roberts, R. J. (1951) Geology of the
Winnemucca Quadrangle, Nevada: U. S. Geological Survey Map GQ-11.
Ransome, F. L. (1909) Notes on some mining districts in Humboldt County,
Nevada: U. S. Geological Survey Bulletin 414.
Vanderburg, W. 0. (1936) Placer mining in Nevada: Nevada Bureau of Mines
and Geology ~ ulletin
27.
Vanderburg, W. 0. (1938) Reconnaissance of mining districts in Humboldt
County, Nevada: U. S. Bureau of Mines Information Circular 6995.
Willden, Ronald (1964) Geology and mineral deposits of Humboldt County,
Nevada: Nevada Bureau of Mines and Geology Bulletin 59.
Gold Run DLstrict - 3

LOCATION
HARMONY DISTRICT
The Harmony district constists of mines and prospects at the
northwest end of the Sonoma Range, about 8 km southeast of the town of
Winnemucca. The properties are located along Thomas Creek, Water Canyon,
and Harmony Canyon.
HISTORY
The first locations were made in this district in 1863; however,
there is no record of production during that period (Vanderburg, 1938, p.
27). Considerable development work was done in 1918 on the Wolverine-Red
Rose group of claims in Harmony Canyon (probably the Harmony Mine on the
topographic map). The only known production from these workings has been
3.5 carloads of copper ore with gold and silver values (Vanderburg, 1938).
The Plymouth (Gayer-Moo) mercury property was originally purchased from
the Southern Pacific Railroad in 1941. Six pounds of mercury were
reportedly extracted from 600 pounds of ore (Bailey and others, 1984).
GEOLOGIC SETTING
The rock units exposed in the Harmony mining district consist of
Cambrian Harmony Formation, Ordovician Valmy Formation, and Tertiary
quartz latite dikes and plugs. The Valmy Formation has been thrust over
the Harmony, and is complexly faulted internally. Elongate quartz latite
dikes are generally north-trending, and cut both the Valmy and Harmony.
The Harmony consists of arkosic sandstone with considerable interbedded
shale and small amounts of gritty conglomerate and limestone. The Valmy
Formation consists of interbedded chert, quartzite, greenstone, sandstone,
and argillite (Gilluly, 1967).
ORE DEPOSITS
Quartz and quartz-calcite veins which cut Valmy and Harmony
Formations contain copper, lead, and zinc sulfide and oxide minerals as
well as silver and gold. The upper portions of these veins are commonly
entirely oxidized to gossan. At the Wolverine-Red Rose group (probably the
Harmony Mine) Vanderburg (1938, p. 27) reports that oxidized and sulfide
copper minerals (chalcopyrite, malachite, azurite), pyrite, and limonite
occur in a series of at least three veins from 4 to 7 feet wide. One vein
0
trends N~O'E, 50 SE. The gangue is quartz, calcite, and county rock. The
Old Bull Mineoin Thgmas Canyon is reported (Willden, 1964, table 25) to
explore a N65 ED 80 SE vein. Sphalerite and galena occur in pieces of
unoxidized ore observed on dumps, and cerrusite and limonite were noted in
oxidized samples. Willden (1964) reports that four samples gave a weighted
average of '1.4% lead, 22.1% zinc, and 0.67 oz silver per ton, over an
average width of 1.5 feet.
Harmony District - 1

At the Gayer-Moo property, very sparse cinnabar occurs vith limonite
and sparse quartz vein matter in a rhyolite dike that cuts quartzite and
grit of the Harmony Formation. The property is near a thrust fault which
separates upper plate Valmy Formation from lover plate Harmony Formation
(Gilluly, 1967).
SELECTED REFERENCES
Bailey, E. H. and others (1984) Quicksilver deposits of Nevada:
Unpublished manuscript, Nevada Bureau of Mines and Geology.
Gilluly, James (1967) Geologic Map of the Winnemucca quadrangle, Pershing
and Humboldt Counties, Nevada: U. S. Geological Survey Map GQ-656.
Vanderburg, W. 0. (1938) Reconnaissance of mining districts in Humboldt
County, Nevada: U. S. Bureau of Mines Information Circular 6995.
Willden, Ronald (1964) Geology and mineral deposits of Humboldt County,
Nevada: Nevada Bureau of Mines and Geology Bulletin 59.
Harmony District - 2

LOCATION
HAYSTACK DISTRICT
The Haystack district is on the northern and eastern slopes of the
Antelope Range and includes prospects in the Alpha Mountains to the east.
Small prospects and mines along quartz veins in metasediments and
granodiorites extend from Long Canyon north east to Box Canyon along the
western margin of the district. Long Canyon is also the site of a large
placer operation. The Imlay-Jungo road bisects the district and provides
the only access. The road passes less than a mile east of the biggest
producer in the district, the Haystack Mine.
HISTORY
The district got its name from Haystack Butte a conical or haystack
shaped knob of granodiorite that crops out in the valley halfway between
the Alpha and Antelope Mountains. The butte forms a very distinct landmark
that is visable for many miles in all directions. As a result, it was
commonly referred to by the early diarist who traveled the Antelope Trail.
Gold-silver mines in the district have been worked intermittently
since 1914 with periods of peak production occurring in the 1930's. By
1915 the gold ore was being treated in a five stamp mill that was erected
on a good source of water a few miles east of the Haystack Mine. By 1939
the total production from the mine was reported to be 1,320 tons of ore
valued at $46,000.
Activity in the district at the time of the study was limited to the
placer workings in Long Valley.
GEOLOGICAL SETTING
The exposed rocks in the district consist of Triassic and Jurassic
metasediments intruded by granodiorite and cut by quartz veins. The
north-south trending mountains are cut by two major east-west drainages;
Long Canyon and Box Canyon. The canyons are narrow and up to 1500 feet
deep. White quartz vein material is a common sight, cropping out along the
canyons or being scattered along the slopes of the darker metasediments.
The veins are usually iron stained and often brecciated.
ORE DEPOSITS
In both Long Canyon and Box Canyon quartz veins have been explored by
shallow shafts, inclines and prospects. The old workings were covered by
location notices that dated from the 1930's.
Several square miles of placer workings at the head of Long Canyon
have been superimposed on older workings along quartz vein systems in
granodiorite. The placer operators have built a 5 to 6 mile pipe-line up
Long Canyon to transport water from the valley to the east to the mine.
The prospects in the Alpha Mountains to the east are along
mineralized quartz veins hosted in granodiorite.
Haystack District - 1

Mineralization in the district appears to be restricted to
gold-bearing quartz veins and veinlets which are also the most likely
source for the placers. The ores at the Haystack Mine are reported by
Johnson (1977) to be free-gold in pods along veinlets. Development at the
mine includes shallow trenches, shafts and prospects that follow the
northeast trending vein system. The workings extend for several hundred
feet along the surface of a granodiorite host that is only slightly
altered. The ore grade mineralization is limited to an area of less than a
quarter mile square and was reported to be shallow in depth.
GEOCHEMICAL RELATIONSHIPS
Samples from the main vein system at the Haystack Mine ran 21.0 ppm
gold with anomalous amounts of bismuth and minor base metals. The
prospects in the Alpha Mountains consisted of east-trending parallel veins
that had visable arsenopyrite up to 2" thick. Assays from the veins ran as
high as 6.0 ppm gold with high values for arsenic. Of the six vein systems
assayed in the district all had detectable gold that ranged in value from
.05 to 21.0 ppm with minor silver and base metals.
SELECTED REFERENCES
Johnson, M. G. (1977) Geology and Mineral Deposits of Pershing County,
Nevada : NBMG Bull. 89.
Vanderburg, W. 0. (1936) Reconnaissance of Mining Districts in Pershing
County, Nevada: USBM IC 6902.
Haystack District - 2

LOCATION
BOOKER DISTRICT
The Hooker district is in the west-central part of the Selenite
Range, about 15 miles southeast of Gerlach and approximately 2.7 miles
east of State Route 447. All the mines and prospects can be located on the
Kumiva Peak 15 minute topographic sheet.
HISTORY
The following data is from Nevada Bureau of Mines and Geology
Bulletin 89: "The gypsum deposits in the central Selenite Range were the
first commodity discovered in the Hooker district. ... Gypsum claims were
first patented between 1910 and 1916. In 1922 the Pacific Portland Cement
Co. began construction of a crushing and calcining plant at what is now
Empire, 3 miles south of Gerlach. A 5-mile aerial tramway was built to
connect the Empire mill with the gypsum quarry. The property was acquired
by U.S. Gypsum Co. in 1948 and has been continually mined to the present.
Production of gypsum by Pacific Portland Cement Co. from 1927 to 1940
totals 1,070,519 tons... . Production of gypsum by U.S. Gypsum Co. from
1948 through 1970 totals 4,980,912 tons." Production from 1971 to the
present is not known.
"The deposit was developed by open-pit mining methods, and a primary
crushing station was constructed to feed minus 5-inch rock to the
tramline. U.S. Gypsum Co. added a gypsum-board plant to the operations at
Empire. .... Five principal products are made: gypsum plaster, wall board,
plaster board, land plaster, and crushed gypsum. ...."
"Tungsten deposits were first located in the Selenite Range in 1941
by various prospectors working in different parts of the range. Apparently
all the known tungsten deposits were discovered that year. Between 1941
and 1957 the Stormy Day Mine, the most productive tungsten mine in the
district, produced 19,523 tons of tungsten ore averaging 0.66 percent W03.
The mine was initially developed during World War I1 and underwent
extensive exploration and development starting in 1952. The Thrasher Mine
and the Thrabert claims adjoining the Stormy Day Mine on the north were
also developed between 1941 and 1957." Production from these properties
has been quite small.
GEOLOGIC SETTING
"The Selenite Range is underlain by metamorphic volcanic rocks of
Late Permian age and sedimentary rocks of Triassic and Jurassic age that
have been intruded by Cretaceous granodiorite. Locally the Paleozoic and
Mesozoic rocks are capped by volcanic and sedimentary rocks of Tertiary
and Quaternary age. All the commodities mined occur in the Mesozoic
metasedimentary rocks."
"The metasedimentary rocks consist marble, coarsely crystalline
dolomite, calc-silicate hornfels, and schist. The rocks strike northward
Hooker District - 1

and dip steeply to the vest. .... Apophyses of the granodiorite extend
several hundred feet into the metasedimentary rocks as dikes and sills."
"Tactite lenses have been formed mainly in the metasedimentary rocks
LO to 25 feet from the contact with the granodiorite. The main mineralized
zone is 15 to more than 20 feet vide and consists of alternating, steeply
dipping layers of scheelite-bearing tactite separated by layers of barren
tactite, calc-silicate hornfels, or silicated limestone. ...."
ORE DEPOSITS
Only tvo commodities have ever been mined from the district -gypsum
and tungsten. Nothing further will be said about the gypsum deposits,
other than vhat has been said in the history section. For a little
additional information on these deposits the reader is referred to Nevada
Bureau of Mines and Geology Bulletin 70 and the discussion on gypsum by
Papke.
The Stormy Day Mine is the largest producer of tungsten in the
district. It is located on the west side of the Selenite Range about 18
miles south of Gerlach. It was discovered in late 1941 and was first
explored by small adits and test pits along the outcrop zone for about 3
miles. The property was leased in 1953-54 and the party concentrated
exploration efforts on the south end of the deposit. Part of the funds for
this work came from the government sponsored DMEA program. Several other
individuals and mining companies leased the property for short periods up
until 1957. Since this time there has apparently been very little activity
on the property. Production through 1956 amounted to about 20,000 tons of
ore which produced 6,819 units of WO . Grade of the ore ran from 0.6% to
1 .OX W03. What production, if any, tiere has been since 1956 is not known.
There are about 2,000 feet of workings consisting of 4 levels, crosscuts
and drifts. Levels are in part connected by stopes.
The mine area is underlain by metasedimentary rocks of Triassic and
Jurassic age intruded by granodiorite of Cretaceous age. Scheelite occurs
in tactite along the limestone-granodiorite contact. The tactite consists
of a coarse-grained aggregate of garnet, epidote, pyroxene, quartz, and
accessory pyrite, pyrrhotite, chalcopyrite, molybdenite, and powellite.
The ore bodies mined occurred along a strike length of 75: feetBovaried
from 1 to 15 feet in width, and extended down a dip of 50 to 70 from the
surface to 225 feet. Diamond drilling in 1953 indicated that ore extended
at least LOO feet below the lowest adit level. Whether or not this ore was
ever mined is not known. Mining was by shrinkage-stope methods.
The only other producing tungsten mine in the district is the Jeakins
Mine (Thrabert Mine). The mine is located about 15 miles south of Gerlach
on the west side of the Selenite Range. It joins the Stormy Day Mine to
the south. The deposit was discovered in 1941 with intermittent work done
over a period of years, but the only recorded production was in 1968 when
45 units of WO were produced. Mine workings consist of two crosscut adits
3
and several open cuts and pits along the "granite*'-limestone contact.
Scheelite occurs in a narrow tactite zone, from 2 to 5 feet wide,
along about 200 feet of the contact between calcareous metasediments and
the granodiorite. Theobedding in the metasediments strikes north or
northeast and dips 60 to 80 west. The intrusive contact parallels the'
Hooker District - 2

edding in general but locally tongues of "granite" cut across the beds.
Grades range from 0.05% to 0.5% WO The ore shipped in 1968 contained
3 '
about 0.7% W03 but is thought to have been hand sorted.
SELECTED REFERENCES
Bonham, H. F., and Papke, K. G. (1969) Geology and mineral deposits of
Washoe and Storey Counties, Nevada: NBMG Bull. 70, p. 119-120.
Johnson, A. C., and Benson, W. T. (1963) Tungsten resources of Nevada:
U.S. Bur. of Mines unpublished data.
Johnson, M. G. (1977) Geology and mineral deposits of Pershing County,
Nevada: NBMG Bull. 89, p. 58-59.
Stager, H. K. (in prep) Tungsten deposits in Nevada: NBMG Bull.
Hooker District - 3

LOCATION
IMLAY DISTRICT
The Imlay district is located in the north end of the Humboldt Range
in T31 and 32N,R33 and 34E and is entirely within Pershing County. The
mines in the district are accessible from Interstate 80 by dirt roads.
HISTORY
The Imlay district is a combination of three older districts,
Humboldt, Prince Royal and Eldorado which were organized in the 1860's.
Although numerous claims were recorded and explored, there apparently was
little production from the area prior to 1907. Renewed activity in the
area commenced with the discovery of the Black Jack mercury mine in
1906-1907. The mercury mine produced 752 flasks in 1913-14. The Imlay Mine
was worked between 1907 and 1918 and the Star Peak Mine produced $130,000
in gold and silver during 1914-16. Renewed activity in the area commenced
in the 1930's with production of gold, silver, mercury, tungsten, and
fluorite continuing intermittently until 1965. The main producer in the
district during this period was the Standard Mine which produced over
$1,000,000 in gold in the periods 1939-42 and 1946-49 from two open pits.
The Valerie fluorspar mine produced 723 tons of 44 percent CaF during
this period. The Black Jack Mine again produced mercury from 1854-65.
Total recorded production from the district is over $1,700,000 and
includes 48,000 oz Au and 151,249 oz Ag as well as mercury, tungsten, and
minor copper and lead.
GEOLOGIC SETTING
Rocks of Triassic age, which form the western limb of a highly
faulted anticline, comprise the bedrock exposures in the Imlay district.
The oldest rocks are rhyolite intrusives, flows and tuffs of the Koipato
Group. The rhyolites are overlain unconformably by sandstone, shale, and
limestone of the Prida Formation. The Prida Formation is overlain by
limestone of the Natchez Pass Formation, which is overlain by shales of
the Grass Valley Formation. Rocks of the Grass Valley Formation and the
upper member of the Natchez Pass Formation are thrust over the Prida
Formation and the Koipato Group along the Humboldt City fault. Numerous
diabasic dikes and sills intrude the Triassic rocks. The geology of the
Imlay Quadrangle has been mapped by Silberling and Wallace (1967).
ORE DEPOSITS
%
Although there are numerous mines and prospects in the Imlay district
the main activity in 1984 during my examination of the district was an
extensive drilling project by Pegasus Gold Corp. concentrated in the
Florida Canyon area and a small placer operation in Imlay Canyon and
vicinity .
Imlay District -1

The Florida Canyon area has been the site of intensive exploration
for sediment-hosted, disseminated gold mineralization for several years by
a succession of companies. No official reserve figures have been released,
but estimated reserves are 22 million tons at 0.022 oz/ton Au. The
disseminated gold mineralization occurs predominantly in silicified shale
and phyllite of the Grass Valley Formation. Minor amounts of gold
mineralization occur in jasperoid in the Natchez Pass Formation and in
silicified breccias in the Prida Formation. The gold mineralization is not
stratiform, it is associated with northeast-trending faults. There is high
degree of correlation between silicification and gold mineralization
although some areas of silicification are barren.
The most significant past gold producer in the Imlay district is the
Standard Mine. The Standard mine area was intensively drilled in 1980-82
by Cordex. Apparently, no minable gold deposit was found by the
exploration program. There are two main open pits at the Standard Mine,
the north pit and the south pit. The mineralized zone at the south pit is
developed along a northeast-trending thrust contact between Grass Valley
phyllite and brecciated carbonate rock of the Prida Formation. The ore
zone is about 10 meters wide. The mineralized rock was silicified,
brecciated, thin-bedded limestone.
At the north pit, a north-trending high-angle fault, cutting
limestones of the Natchez Pass Formation which are overlain by phyllite of
the Grass Valley Formation, appears to have controlled the gold
mineralization. There is abundant brecciated jasperoid present in the pit
area. There was no activity in the Standard mine area at the time of my
visit in August 1984.
The Imlay placer deposit was active in August 1984. It was being
worked by Global Resources Inc. of Houston, Texas. The productive gravels
are 1-2 meters thick and rest unconformably upon older gravels which are
partially cemented by iron oxides and caliche. The placer deposit contains
scheelite and cinnabar in addition to gold.
There are two mines in the area which mined scheelite from pegmatitic
quartz veins, the Lakeview and the Starlight open pit. The quartz veins
contain scheelite, fluorite, beryl, muscovite, tourmaline and minor
sulfides. The veins occur, in both mines, at the contact between rhyolite
of the Koipato Group and the basal clastic and carbonate unit of the Prida
Formation.
Two small fluorite mines are also present in the Imlay district, the
Valerie Mine and the Piedmont Mine. Fluorite at the Valerie deposit,
occurs in limestone of the Prida Formation just beneath a thrust contact
with massive limestone of the Natchez Pass Formation. The area was drilled
in 1984 for potential disseminated gold mineralization. At the Piedmont
Mine, a banded quartz-fluorite vein occurs in rhyolite porphyry of the
Koipato Group. The property was idle in 1984.
The Imlay Mine explored gold-bearing quartz veins and stockworks in
phyllite of the Grass Valley Formation. The main vein, worked in the early
1900's, is about 0.3 meters wide. The I-M claims, about one mile south of
the Imlay Mine, explore narrow quartz veins in phyllite and quartzite of
the Grass Valley Formation. The veins contain pyrite, tetrahedrite and
jamesonite(?), and their oxidized products.
The Blackjack Mine, in the Eldorado Canyon area, is a mercury deposit
in thin-bedded limestone of the Prida Formation. Cinnabar was the only ore
mineral. Areas of jasperoid and gossan also occur in the mine area, but
Imlay District -2

apparently did not contain cinnabar. The area has been drilled recently as
a disseminated gold prospect.
The Star Peak Mine, located on the north Flank of Star Peak, produced
gold From a quartz vein in the period between 1913-16. The quartz vein 0.5
to 1 meter wide, trends N50E, dips ~OONW
and cuts arkose and argillite of
the Prida Formation and rhyolite porphyry of the Kolpato Group. The vein
quartz contains pyrite, sphalerite and covellite.
The Star Mine produced scheelite and stibnite from a quartz vein in
limestone of the Natchez Pass Formation. The vein trends N60-70W and dips
steeply to the NE. It is up to 5 meters wide. Stibnite, sphalerite,
scheelite, pyrite, and tetrahedrite occur in the vein quartz.
There are a number of other small mines and prospects in the Imlay
district with little to no production. The future production from the
district will probably depend upon the success or failure of the
exploration project in the Florida Canyon area.
Humboldt Range Districts
Information on the history and production of districts in the
Humboldt Range is summarized from Johnson (1977).
GEOCHEMISTRY
A sample (#2506) from a vein adjacent to the Nevada Humboldt deposit
is anomalous in silver, arsenic, boron, beryllium, lead, antimony, and
zinc. It contained 0.05 ppm gold. A sample of ore from the Starlight Mine
is highly anomalous in silver, boron, bismuth, beryllium, lead, and
tungsten and anomalous in antimony, manganese, and tin. Similar ore from
the Lakeview Mine is also highly anomalous in boron, beryllium, tungsten,
and tin but only weakly anomalous in silver and lead. It also contains
anomalous barium, manganese, and chromium.
A sample of quartz vein material from the Nevada Humboldt group is
anomalous in silver, arsenic, boron, beryllium (1000 ppm), lead, tungsten,
and zinc. It also contains weakly anomalous copper and less than 0.05 ppm
gold. A sample of jasperoid from the property is anomalous in silver,
boron, bismuth, copper, and lead. It contained less than 0.05 ppm gold.
Sample 2513 from quartz veins on the PQX claim group, is anomalous in
silver, arsenic, boron, bismuth, chrome, lead, antimony, and zinc. It
contained 0.30 ppm gold.
Samples of fluorite are from the Piedmont Mine, are weakly anomalous
in boron, copper, vanadium, and zinc. One sample contained anomalous
arsenic and 6.3 ppm gold. A fluorite-rich sample contained 1.2 ppm gold.
Samples of carbonaceous, shaly limestone from the basal member of the
Prida Formation taken from rotary drill cuttings in the area south of
Florida Canyon, are weakly anomalous in silver, barium, chromium,
molybdenum, arsenic, and vanadium. Two -samples contained 0.05 ppm gold.
Samples of fluorite from the Valerie fluorspar mine are anomalous in
silver, arsenic, chromium, molybdenum, nickel, vanadium, and zinc. One
sample contained 0.15 ppm gold and weakly anomalous antimony.
Two samples were obtained from the Blackjack mercury mine, one of
cinnabar ore, the other of jasperoid. The jasperoid sample is anomalous in
arsenic, barium, chromium, copper, molybdenum, vanadium, antimony, and
Imlay District -3

zinc. It contains 0.05 pprn gold. The sample of mercury ore is anomalous in
zinc strontium and vanadium, and weakly anomalous in antimony.
Two samples vere also collected at the Star Peak Mine, one of
mineralized vein quartz, the other of jasperoid and argillite. The vein
sample is anomalous in silver, arsenic, antimony, copper, molybdenum,
lead, and zinc. It also contains 6.8 pprn gold. The jasperoid-argillite
sample is anomalous in arsenic, boron, barium, chromium, copper,
molybdenum, lead, antimony, vanadium, and zinc. It contained less than
0.05 pprn gold.
A sample of the heavy mineral concentrate from the Imlay placer mine
is anomalous in manganese, arsenic, boron, barium, cobalt, chromium,
copper, molybdenum, nickel, lead, vanadium, tungsten, antimony, zinc, and
zirconium. It contains 0.2 ppm gold. Cinnabar occurs in the concentrates.
Several samples were taken at the Imlay Mine of stockworks quartz
vein mineralization. Two samples are anomalous in manganese, all are
weakly anomalous in silver, and antimony. All are anomalous in arsenic,
boron, and barium, two are anomalous in copper and lead, all are weakly
anomalous in vanadium. One sample is anomalous in zinc. Two samples
contained 0.05 pprn gold, one 0.10 pprn gold.
A sample of quartz vein matter from the I-M claims is anomalous in
silver, arsenic, antimony, boron, copper, lead, zinc, and contained 0.40
pprn gold.
Two samples from the Star Mine are anomalous in silver, antimony,
copper, and lead. One sample is anomalous in tungsten, the other in zinc.
One sample contained .05 pprn gold, the other 0.15 pprn gold.
Two samples were taken from the south pit at &he Standard Mine and
two from the north pit. The south pit samples are anomalous in silver,
arsenic, strongly anomalous in antimony, anomalous in copper and lead. One
sample was anomalous in chromium, molybdenum, and vanadium. One sample
contained 0.90 pprn gold, the other 0.45 pprn gold. The north pit samples
are anomalous in silver, antimony, arsenic, chromium, copper, lead, and
vanadium. One sample contained anomalous tungsten. The samples contained
0.45 pprn and 0.80 pprn gold.
SELECTED REFERENCES
Johnson, M. G. (1977) Geology and mineral deposits of Pershing County,
Nevada: Nevada Bureau of Mines and Geology Bull. 89, 115 p.
Papke, K. G. (1979) Fluorspar in Nevada: Nevada Bureau of Mines and
Geology Bull. 93, 77 p.
Silberling, N. J., and Wallace, R. E. (1967) Geologic map of the Imlay
Quadrangle, Pershing County, Nevada: Map GQ 606, U.S. Geological Survey.
Imlay District -4

LOCATION
INDIAN DISTRICT
The Indian district is located in the Humboldt Range on Indian Creek
in T29N, R34E, in Pershing County. It is accessible by a poor dirt road
from the Spring Valley-Unionville road.
HI STORY
According to Johnson (1977) the district was discovered in 1861 and
the Moonlight Mine was worked between 1861 and 1871 producing about
$100,000 in high-grade silver ore. The district has been idle for many
years.
GEOLOGIC SETTING
In the Indian Creek area rocks of the Limerick Greenstone are thrust
over the Rochester Rhyolite. Both formations are part of the Lower
Triassic Koipato Group. The geology of the area has been described by
Wallace and others (1969).
ORE DEPOSITS
There are two small mines in the Indian district, the Moonlight Mine
an: the Bluebird Mine. The Moonlight Mine is located on a N40E trending,
80 NW dipping shear zone in schistose rhyolite. Barite and oxide copper
minerals including tenorite, malachite and azurite are associated with
quartz stringers in the sheared rhyolite. The mine has been idle for many
years.
The Bluebird Mine is located on a 1 meter wide quartz vein in
Limerick Greenstone. The vein trends NW and is steeply dipping. The vein
contains pyrite, chalcopyrite, tetrahedrite and galena. Oxidation
products include chrysocolla, malachite, tenorite, azurite and Pb-Sb
oxides. The wallrocks are sericitized.
GEOCHEMISTRY
A sample from the Moonlight Mine contained 2000 ppm silver, more
than 5000 ppm barium, 1 percent copper, and anomalous lead, antimony and
zinc.
A sample from the Bluebird Mine is anomalous in silver, arsenic,
bismuth, vanadium and zinc and contains. 2 percent copper, 1.5 percent
lead and 2000 ppm antimony.
Indian District - 1

SELECTED REFERENCES
Johnson, M.G. (1977) Geology and mineral resources of Pershing County,
Nevada: Nevada Bureau of Mines and Geology Bull. 89, 115 p.
Wallace, R.E., Tatlock, D.B., Silberling, N.J., and Irwin, W.P. (1969)
Geologic map of the Unionville Quadrangle, Pershing County, Nevada:
U.S. Geological Survey Map 64-820.
Indian District - 2

LOCATION
IRON HAT DISTRICT
The Iron Hat mining district, also known as the Aldrich district, is
at the northeastern end of the Tobin Range. It includes mines and
prospects in the vicinity of Smelser Pass and to the south along the east
flank of the Tobin Range to Lee Canyon. Mines to the north of the Iron Hat
district are described in the Buffalo Mountain mining area, and those on
the west flank of the northern Tobin Range are included in the Tobin and
Sonoma Range mining area (see Johnson, 1977, pl. 2A). The name Cherry
Creek district or mining area has been used for the area of prospects near
Cherry Creek in the center of the district.
HISTORY
Silver-lead ore was discovered in the Iron Hat district in the
1880's. The available production records are incomplete; total production
has been small, probably between $15,000 and $30,000 (Johnson, 1977, p.
62). In 1944-45 $9,626 was recovered from the Valmy Mine from 341 tons of
ore containing 3 oz of gold, 5,331 oz silver, 800 lb copper, and 66,700 lb
lead. This production was probably from what is now called the Silver-Lead
Mine, as suggested by the size and condition of dumps, and the presence of
sulfide minerals on those dumps.
The Ore Drag Mine in Lee Canyon apparently was first worked in 1940?,
when approximately 26 tons of ore averaging 62% antimony were produced
(Lawrence, 1963, p. 200). In 1942 approximately 8 tons of tungsten ore
containing 111 units of WO were produced (Johnson, 1977).
Recent exploration activity in the area consists of rotary drilling
and bulldozer trenching in an area of copper prospects about 6 km
northeast of Smelser Pass and along a canyon 1 km north of Cherry Creek.
Probably both of these exploration efforts were for precious metals.
GEOLOGIC SETTING
The northern end of the Tobin Range is underlain by a structurally
and stratigraphically complex sequence of Pennsylvanian, Permian, and
Triassic sedimentary and volcanic rocks (Johnson, 1977, pl. 1). Much of
this part of the range is cut by high-angle faults. The major geologic
units present are the Pennsylvanian-Permian Pumpernickel and Ravallah
Formations (greenstone, quartzite, chert, and argillite), the Triassic
Cane Spring and Agusta Mountain Formations (limestone, dolomite, and
subordinate clastic rocks), and the Triassic Panther Canyon and China
Mountain Formations (conglomerate, sandstone, shale, and dolomite).
ORE DEPOSITS
The district name "iron hat" refers to the iron-bearing weathered
product or gossan that forms over a sulfide deposlt. Indeed the
sulfide-bearing veins in the district do have iron hats of limonite
Iron Hat District - 1

gossan. The district contains three types of deposits: copper-bearing
veins, lead-silver veins, and an antimony vein deposit.
Several properties at the north end of the district (northeast of
Smelser Pass) contain copper mineralization along shear zones in Havallah
and Panther Canyon Formations. These units are intruded by granodiorite a
few kilometers to the northwest, and the copper mineralization may be
related to that intrusive event. Oxide copper minerals (chrysocolla,
azurite, malachite, chalcocite) occur with iron oxide minerals in the
oxidized portions of the veins. Pyrite and chalcopyrite were noted at one
property (Dry Hill No. 5 claim) and tetrahedrite was present at another
(BVL claims). Wallrocks are locally silicified, and spotty quartz occurs
as gangue. Felsic porphyry dikes? are present in the vicinity of some
mines.
In the central part of the district, in the vicinity of Cherry Creek,
lead-silver deposits are found. The ores consist of galena, pyrite,
sphalerite, and sparse chalcopyrite? in a gangue of white barite and
jasperoid. The mineralization occurs as lenticular replacements and
vein-like bodies in Triassic dolomite. The oxidized portions of the
deposits reportedly contain cerrusite, hemimorphite (Ferguson, Roberts,
and Muller, 1952; Papke, 1984, p. 120), cerargyrite (Payne, 1965, p. 12),
limonite, and sparse colored oxide copper minerals. Veins, which are often
defined by gossan and massive white barite, generally trend north or
northeast and dip steeply. The veins and stockworks of barite are often
enclosed in jasperoid or jasperoid breccia. Intermediate to felsic dikes,
sills, and irregular small plugs are observed at a number of localities
near the mines (Payne, 1965, p. 9). Vanderburg (1936, p. 8) reports that
lead ore shipped from one mine contained 42 oz silver per ton.
The Ore Drag Mine is located in Lee Canyon, about 4 km south of
Cherry Creek area. Stiknite, scteelite, and antimony oxides occur with
quartz gangue in a N70 W, 60-75 S shear zone in Agusta Nountain Formation
limestone, shale and chert (Lawrence, 1963, p. 200-201; Johnson, 1977, p.
62). The wallrocks are silicified. Samples of antimony ore contain 0.36
and 0.48 oz silver per ton (Lawrence, 1963, p. 201).
SELECTED REFERENCES
Ferguson, H. G., Roberts, R. J., and Muller, S. W. (1952) Geology of the
Golconda quadrangle, Nevada: U. S. Geological Survey Map GQ-15.
Johnson, M. G. (1977) Geology and mineral deposits of Pershing County,
Nevada: Nevada Bureau of Mines and Geology Bulletin 89.
Lawrence, E. F. (1963) Antimony deposits of Nevada: Nevada Bureau of Mines
and Geology Bulletin 61.
Papke, K. G. (1984) Barite in Nevada: Nevada Bureau of Mines and Geology
Bulletin 98.
Payne, A. L. (1965) Report on the Land Rover prospect, Cherry Creek Mining
District, Pershing County, Nevada: Unpublished private report, Nevada
Bureau of Mines and Geology files.
Iron Hat District - 2

Southern Pacific Co. (1964) Minerals for industry - Northern Nevada and
northwestern Utah, summary of geological survey of 1955-1961, v. 1: San
Francisco, Southern Pacific Co.
Vanderburg, W. '0. (1936) Reconnaissance of mining districts in Pershing
County, Nevada: U. S. Bureau of Mines Information Circular 6902.
Iron Hat District - 3

LOCATION
IRON POINT DISTRICT
The Iron Point mining district and nearby railroad siding are named
for Iron Point, a low ridge with a reddish coloration at the northeast end
of Edna Mountain, about 15 km east of the town of Golconda. Although the
red rocks were suspected to "indicate the proximity of iron" (see Carlson,
1974), the ridge is made up of Tertiary basalt flows (Erickson and Marsh,
1974). In this report the district is somewhat arbitrarily restricted to
properties in the Golconda, 7 1/2-minute quadrangle. Mines and prospects
in the Golconda Summit area southwest of Iron Point are included in the
Golconda district.
HISTORY
There is no record of any production in the district until 1918,
although some claims were located considerably earlier (Vanderburg, 1938).
The Silver Coin Mine is reported to have produced 30,854 oz of silver from
693.5 short tons of ore. The ore also contained a little lead and about
0.02 oz gold per ton (Vanderburg, 1938). A well-constructed heap-leach
facility has been built in the last few years at the Silver Coin Mine.
Additionally, exploration drilling for precious metals has been conducted
in areas of hydrothermal alteration in an area of several square
kilometers around the Silver Coin Mine. Rotary drilling has also been
recently conducted for precious metals elsewhere in the district by the
Southern Pacific Company.
GEOLOGIC SETTING
The rocks in the Iron Point district consist predominantly of
Cambrian, Ordovician, Pennsylvanian, and Permian sedimentary rocks which
are intruded by dikes and a small plug of Cretaceous granitic rocks and
overlain by late Tertiary gravel and basalt. Much of the silver
mineralization is confined to chert, quartzite, and dolomite of Cambrian
and Ordovician age. The rocks are cut by thrust faults as well as
north-trending high angle faults.
ORE DEPOSITS
Most of the workings in the district are for silver; Vanderburg
(1938) reports that the ore minerals at the Silver Coin Mine are
ceragyrite, argentite, and tetrahedrite, aociated with cerussite and
oxidized copper minerals. A small arnourlt of galena and pyrite were noted
in one pile on a dump, suggesting that these minerals may be present
underground. The silver mineralization is associated with quartz veins,
stockworks, and extensive silicified zone in the Ordovician Valmy
Formation (see Erickson and Marsh, 1974). Veins are found along both high-
and low-angle structures. Recent drilling in the district has encountered
a considerable footage of mineralized rock with values of 0.05-0.1 oz
Iron Point District - 1

silver per ton and a trace gold. However, no higher grade zones are known
to have been found.
An outcrop of metal-rich black shale is Located in S12,T35N,R41E
about 1.5 km north of U.S. 1-80 on the east side of Golconda Summit. The
shale is within the Comus Formation (Ordovician), and is rich in vanadium
and zinc, but also contains unusual concentrations of copper, silver,
nickel, and barium. The highest concentrations of metal occur in a
stratigraphic zone about 10 m thick and traceable for over 300 m (Fischer,
1965, p. 166). The deposit hads been explored in the past for the
contained metals, but the grade is reportedly too low and metallurgical
problems probably too complex.
A manganese prospect is reported from S15,T35N,R41E. Manganese oxides
are reported to replace chert along a ~ 7 5 ' fracture ~ zone (Southern
Pacific Co., p. 97). Erickson and Marsh (1974) report that a mapped green
anad red chert unit in the Ordovician Valmy Formation locally contains
manganese prospects near its base. Erickson and Marsh (1974) also report
that the contact of a Valmy Formation greenstone unit with chert and shale
is favorable ground for copper mineralization.
SELECTED REFERENCES
Carlson, H. S. (1974) Nevada place names: University of Nevada Press,
Reno.
Erickson, R. L., and Marsh, S. P. (1971a) Geochemical, aeromagnetic, and
generalized geologic maps showing distribution and abundance of mercury
and arsenic, Golconda and Iron Point quadrangles, Humboldt County,
Nevada: U. S. Geological Survey Miscellaneous Field Studies Map MF-312.
(1971b) Geochemical, aeromagnetic, and generalized geologic maps
showing dlstribution and abundance of antimony and tungsten, Golconda
and Iron Point quadrangles, Humboldt County, Nevada: U. S. Geological
Survey Miscellaneous Field Studies Map MF-313.
(1971~) Geochemical, aeromagnetic, and generalized geologic maps
showing dlstribution and abundance of gold and copper, Golconda and
Iron Point quadrangles, Humboldt County, Nevada: U. S. Geological
Survey Miscellaneous Field Studies Map MF-314.
(1971d) Geochemical, aeromagnetic, and generalized geologic maps
showing distribution and abundance of lead and silver, Golconda and
Iron Point quadrangles, Humboldt County, Nevada: U. S. Geological
Survey Miscellaneous Field Studies Map MF-315.
(1972) Geochemical, aeromagnetic, and generalized geologic maps
showing distribution and abundance of molybdenum and zinc, Golconda and
Iron Point quadrangles, Humboldt County, Nevada: U. S. Geological
Survey Miscellaneous Field Studies Map MF-345.
(1974) Geologic quadrangle map of the Iron Point quadrangle,
Humboldt County, Nevada: U. S. Geological Survey Geologic Quadrangle
Map GQ-1175.
Iron Point District - 2

Fisher, R. P. (1965) Vanadium in Mineral and water resources of Nevada:
Nevada Bureau of Mines ~ullzin 65, p. 165-166.
Southern Pacific Co. (1964) Minerals for industry - Northern Nevada and
northwestern Utah, summary of geological survey of 1955-1961, v. 1: San
Francisco, Southern Pacific Co.
Vanderburg, W. 0. (1938) Reconnaissance of mining districts in Humboldt
County, Nevada: U. S. Bureau of Mines Information Circular #6995, p.
28-29.
Iron Point District - 3

LOCATION
JACKSON MOUNTAINS DISTRICT
The Jackson Mountains are a prominent range near the center of
Humboldt County. They extend some 45 miles north from the south boundary
of the county. The Jackson Mountains district is an area in the northern
part of the range. The center of the district is roughly the Trout
Creek-Jackson Creek divide. From the saddle that the road passes through a
radius of five miles in all directions will cover the district.
HISTORY
Prior to the start-up of mining operations at the DeLong iron mine in
1952 very little is known about mining activity within the district.
Lincoln mentions that small amounts of argentiferous copper ores and lead
ores have been shipped from the district but he gave no indication of when
this happened. His information probably came from "Mineral Resources of
the United States", as he listed three yearly volumes in his bibliography,
1912, 1918 and 1920. Based on the dates of these volumes the writer has
assumed that some activity was in progress in 1912, possibly a few years
before 1912. It also seems likely that there was some activity during the
depression years of the 1930's. Many people, particularly in the west,
prospected for precious metals during this period. -There are four sets of
old workings in the area and while it can't be stated for certain, it is
thought that all pre-date World War 11.
Mining began at the DeLong iron mine in 1952 and continued for the
next 10 to 15 years. By the end of 1960, 664,403 long tons of iron ore had
been mined. Three other iron mines are also found in the district. They
are the Redbird Mine, Humboldt Mine and the Jackson prospect (originally
the Iron King Prospect). All of these properties have had some production
but not near as much as the DeLong Mine. Total iron ore production for the
district approaches, or maybe even exceeds, one million long tons.
GEOLOGIC SETTING
The district is underlain principally by a thick series of andesitic
to basaltic flows, flow-breccias, agglomerates, tuffs, and locally,
graywacke and volcanic-debris sandstone which Willden has called the Happy
Creek volcanic series. These rocks are thought to be Permian in age,
possibly Late Pennsylvanian. Overlying this unit, but of small areal
extent, is the King tear Formation. According to Willden it covers an area
that starts northwest of Parrot Peak and runs south approximately 4 or 5
miles. It is generally about a half mile in width. Age is thought to be
Late Cretaceous. This Formation is camp-osed of about equal amounts of
dark-green and greenish-brown pebble to boulder conglomerate and green to
greenish-gray dense finely crystalline limestone. On the west edge of the
district and lying south of Jackson Creek is a unit of undivided, and
unnamed, volcanic and sedimentary rocks. They cover an area of about two
square miles. They are thought to be Permian-Triassic in age. This unit
overlies the Happy Creek Group with a gradational contact. The rocks of
~ackson Mountains District - 1

this unit have all been metamorphosed but consisted originally of a lower
part of interbedded graywacke, basic volcanic rocks, silty cherty shale,
pebble conglomerate, and some silty and siliceous limestone, grading
upward into a section of which is predominantly shale with thin chert,
limestone, and dolomitic beds. North of Jackson Creek and in the northwest
portion of the district is a Cretaceous-Tertiary age granodiorite
intrusive. It covers about 6 square miles, intrudes the Happy Creek Group,
and at least for a portion of its contact with the Happy Creek Group has
created a skarn zone.
The most prominent tectonic feature in the district is the Deer Creek
thrust fault. It is fairly continuously exposed from the north side of
Deer Creek Peak to just south of the divide between Jackson Creek and
Trout Creek. At the south end it is offset by several east-west trending,
high-angle faults .
ORE DEPOSITS
Dollar wise as well as volume wise the iron deposits are the most
prevalent economic commodity of the district. There may have been over one
million long tons of iron ore produced exceeding a value of seven million
dollars. Of much lesser importance are the argentiferous copper deposits
of which, at the most, only a few tens of thousands of dollars worth of
ore was mined.
There are four iron mines in the district-all of which have produced
some ore. By far the largest is the DeLong Mine (Iron King). Of the over
one million tons produced from the district the DeLong Mine can be
credited with somewhere around 700,000 tons of production. Following would
be the Redbird, Black Jack (Humboldt Mine) and Jackson prospect. The
predominant ore mineral in the district is magnetite but there are also
minor amounts of hematite. At the DeLong Mine the ore occurs as
replacement deposits in greenstone adjacent to a north-trending fault
system, and adjacent to or near diorite, to which they are thought to be
related. The rest of the deposits occur in essentially the same manner as
the DeLong Mine ores. Sample 2433 was collected at the DeLong Mine.
The copper occurrences are associated with a contact metamorphic zone
and mineralization is either in hornfels or in quartz veins. The Harrison
Grove Mine is typical of these occurrences. The mineralization here is
associated with quartz "veins" and a hornfelsic unit, which in part looks
like a basic intrusive rock. There is considerable medium to fine-grained
granodiorite in the creek bed. The granodiorite is shot through with
eipdote and pink feldspar veinlets as well as being disseminated
throughout the rock. The black minerals are altered to chlorite.
Mineralization consists of copper oxides of malachite, azurite and
chrysocolla. Sulphides observed consisted of pyrite and chalcopyrite.
Sample 2430 was collected at the Harrison Grove Mine; sample 2431 was
collected from an unnamed copper prospect down the creek from the Harrison
Grove Mine; and sample 2432 was collected at the Christiorsson Canyon
prospect.
Jackson Mountains District - 2

SELECTED REFERENCES
Lincoln, F. C. (1923) Mining districts and mineral resources of Nevada:
Reprint Ed. 1970, Douglas McDonald Pub, Verdi, NV, p. 98-99.
Shawe, F. R., Reeves, R. G., and Kral, V. E. (1962) Iron ore deposits of
Nevad-part C. iron ore deposits of northern Nevada: NBMG Bull. 53, p.
103-109.
Willden, R. (1964) Geology and mineral deposits of Humboldt County,
Nevada: NBMG Bull. 59, 154 p.
Jackson MountaLns District - 3

LOCATION
JERSEY VALLEY DISTRICT
The Jersey Valley mining district is a small district located on the
southwest edge of the Fish Creek Mountains. The Jersey Valley-Rex group of
mines is located in S27 and 34,T27N,R40E. The Black Eagle manganese mines
are reported to be near the section line of S11 and 14,T27N,R40E.
HISTORY
The Jersey district was discovered by A. S. Trimbel in 1874. The
Jersey Valley Mine produced considerable shiping ore from 1880 to 1910,
and small shipments from 1921 to 1929 (Vanderburg, 1936). The ores were
mined mainly for silver and lead, but zinc, copper, and gold were also
recovered (Johnson, 1977, p. 62-63).
The Black Eagle manganese mines were located in 1934, and explored by
the U. S. Bureau of Mines in 1941 (Needham and Trengrove, 1950; Tengrove,
1959). The mines produced small shipments of 21% manganese ore, mined by
open pit methods, in 1952 and 1953. The U. S. Bureau of mines reports
refer to the manganese mining area as the Blue Lead district.
GEOLOGIC SETTING
The rocks exposed in the Jersey Valley district along the southeast
flank of the Fish Creek Mountains are Pennsylvanian and Permian units of
the Pumpernickel and Havallah Formations. The Pumpernickel is
predominantly greenstone and dark chert; the Havallah is chert and
quartzite, with smaller amounts of limestone and slate and a little
conglomerate (Ferguson, Muller and Roberts, 1951). A small diorite stock
crops out just to the south of the Rex Mines (Johnson, 1977, p. 62;
Ferguson, Muller and Roberts, 1951).
ORE DEPOSITS
The most extensive workings in the area of the Rex Mines are along a
N ~ O ~ W 6, 0 ' ~ vein ~ which cuts light gray chert and olive siltstone of the
Pumpernickel Formation. The mineralized fault zone consists of spotty,
fine-grained quartz and ocherous limonite gossan. No sulfide minerals were
observed in outcrop or on dumps; however, Vanderburg (1936, p. 19) reports
that the ore is argentiferous galena with lead carbonate. The district has
also produced some zinc, copper, silver and gold. From the sparse
information available, the ore was primarily agentiferous galena,
associated with sphalerite and minor carbonates and oxides (Johnson, 1977,
p. 63).
The manganese deposits are reported to be three narrow, lenticular
bodies consisting of an intimate mixture of manganese oxides (chiefly
psilomelane), wad, and silica (Needham and Trengrove, 1950; Trengrove,
1959). The lens-like bodies parallel bedding in the enclosing cherts, and
red jasper occurs both above and below massive ore. In addition, stringers
Jersey Valley District - 1

of manganese oxides occur in rocks below the ore. All these features
suggest a syngenetic exhalative origin for the deposits. Outcrop samples
reportedly contain 0.1-0.6 oz silver per ton, but no zinc or lead (map by
L. B. Lafcke, 1937, in Nevada Bureau of Mines and Geology files). The
major ore body is reported to be 820 feet long and an average of 35 feet
thick (Johnson, 1977, p. 63).
SELECTED REFERENCES
Ferguson, H. G., Muller, S. W. and Roberts, R. J. (1951) Geologic map of
the Mount Moses quadrangle, Nevada: U. S. Geological Survey Map GQ-12.
Johnson, M. G. (1977) Geology and mineral deposits of Pershing County,
Nevada: Nevada Bureau of Mines and Geology Bulletin 89.
Needham, A. B. and Trengrove, R. R. (1950) Investigation of Black Diablo,
Black Eagle, and Black Rock manganese deposits, Pershing and Lander
Counties, Nevada: U. S. Bureau of Mines Report of Investigations 4713.
Trengrove, R. R. (1959) Reconnaissance of Nevada manganese deposits: U. S.
Bureau of Mines Report of Investigations 5446.
Vanderburg, W. 0. (1936) Reconnaissance of mining districts in Pershing
County, Nevada: U. S. Bureau of Mines Information Circular 6902.
Jersey Valley District - 2

LOCATION
JESSUP DISTRICT
The Jessup district is located in the southern Trinity Range in
northwestern Churchill County. Access to the townsite of Jessup and the
area of greatest mining activity is via U.S. Interstate Highway #80, 13
miles north of Bradys Hot Spring, then west 4 miles via the Jessup Wash.
The main Jessup district is centered on several precious metal mines and
prospects in Secs. 17,18 and 20, T24N,R28E. Also included in the Jessup
district however are the Copper Queen and Hard-to-Find mines both in Sec.
34, T25N,R28E, the Gold Ore claims in Sec. 22, T24N,R27E, about 2 miles to
the southwest of the main Jessup district, and a series of mines and
prospects in the metavolcanics further to the west in Secs. 17 and 19,
T24N,R27E. Both the Copper Queen and Hard-to-Find mines are sometimes
included in the Copper Valley or Ragged Top districts which border Jessup
to the north.
HISTORY
According to Paher (1970) the initial mining activity in the district
began in 1908 and the first ore was shipped later that same year. The ore
came from the Gold Claim group which was reported to be the districts
biggest producer. The camp expanded quickly from 19.08-1909 reaching a
total of 300 people and numerous small companies. The mines proved to be
spotty and shallow and the early burst of activity ended with discouraging
results. By late 1909 much of the effort ceased except for occasional
activity by lessors and prospectors. In recent years the central part of
the district has been the site of several drilling operations but there
has not been any noticeable follow-up.
According to Willden and Speed (1974) there is evidence to suggest
that mining in the vicinity of the Copper Queen Mine may have started as
early as the 1900's. Later development and exploration work was for
tungsten mineralization in tactite zones associated with metasediments and
granites. The same is true of the Hard-to-Find Mine where workings explore
tactite zones in the metasediments. Production from these mines is unknown.
Workings at the Gold Ore claims to the southwest consist of several
shafts and one adit in metavolcanic rocks. The workings on the west side
of the camp include a two compartment shaft several hundred feet deep. The
camp appears to date from the 1930's.
The mines and prospects along the western margin of the district are
mostly quartz veins hosted in metavolcanics and metasediments and one
open pit that may have been mined for turquoise.
GEOLOGIC SETTING -
According to Willden and Speed (1974) the rocks in the Jessup
district consist primarily of Tertiary volcanics and sedimentary rocks
resting on older metavolcanics and metasediments which have been intruded
by granodiorite and monzonite plutons. The central portion of the mining
district at Jessup proper consists of metavolcanic rocks overlain by
Jessup District - 1

andesitic volcanic rocks that have been intruded by rhyolite plugs and
dikes. Most of the activity in this part of the district has been directed
at or along the margins of these rhyolite intrusives. At the Gold Ore
claims the rocks are dominantly silicified and partly brecciated
metavolcanics.
ORE DEPOSITS
In the central district, mine workings are along intrusive volcanics
that follow a north-trending structure in meta-andesites (?). The highly
altered and partly brecciated intrusive may be a rhyolite plug. The
central portion of the plug is bleached white and in places is strongly
silicified. In the area of the Mable "B" claims there are northwest-
trending structures that expose a volcanic intrusive. The volcanic rock is
partly brecciated, strongly silicified and iron stained. Open spaces in
the breccia are filled by quartz which shows cockade structures. There is
very little visable mineralization although this portion of the district
was reported to have pockets of high-grade gold-silver ore.
The mine workings at the Gold Ore claims follow a NE-trending zone in
metavolcanics that has been flooded by silica and partly brecciated.
Mineralization includes pyrite, copper minerals and possible gold, silver
mineralization.
Most of the mineralization in Sec. 17 is associated with minor shows
of sulfides in quartz veins. The workings appear to date from the 1930's
although there has been recent work done by dozers.-
In Sec. 19 an area of old mine workings has been open pitted,
probably for turquoise. Turquoise nodules occur in young sediments near
their contact with older metasedimentary rocks and granite.
The original mine workings followed quartz veins in structures
cutting the metasedimentary rocks. The veins contain minor amounts of
oxide copper minerals and some sulfides.
GEOCHEMICAL RELATIONSHIPS
Samples from the mines, prospects, trenches, and exposed veins in
Jessup proper were anomalous in arsenic, gold, and silver with only minor
base-metal values. Gold values ranged in value from .15 to 68 ppm and
silver ranged from 3 to 500 ppm.
Samples from the Copper Queen and Hard-to-Find mines had anomalous
copper, minor tungsten and low silver. A sample from a highly silicified
shear zone at the Gold Ore claims ran 4.5 ppm gold, LOO ppm silver and was
anomalous in arsenic. Samples from the unnamed mines and prospects in
Secs. 17 and 19, T24NDR27E had minor gold values, several silver values at
100 ppm and some anomalous but scattered base-metal values.
Jessup District - 2

SELECTED REFERENCES
Paher, S. U. (1970) Nevada Ghost Towns and Mining camps: Howell-North, San
Diego.
Uillden, R., and Speed, R. C. (1974) Geology and Mineral Deposits of
Churchill County, Nevada: NBMG Bull. 83.
Jessup District - 3

LOCATION
JUNCO AREA
For the purpose of this report the Jungo area includes a group of
mines and prospects that fall within an area that has as its southeast
corner the railroad siding of Jungo; a northern boundary that includes the
Jungo Hills; a western boundary that terminates somewhat along the crest
of the Jackson Mountains, and a southwest terminus at Antelope siding on
the Western Pacific Railroad. The southern boundary is the Western Pacific
Railroad tracks between Antelope siding and Jungo. Jungo lies
approximately 36 miles west of Winnemucca. The mines and prospects are
located on the Donna Schee Peak 15 minute topographic map and two 7-112
minute topographic maps--Jungo, and Sugarloaf Knob.
HISTORY
Virtually nothing is known about the history of any of the mines and
prospects that lie within this area. Willden shows one locality on his
Mineral Resource Map and he lists no mineral commodity for it. Johnson
lists a Dunnashee district in her gold placer bulletin but knows nothing
about its history. Most of the workings in this area appear to be
lead-silver or copper-lead-silver. One set of workings on the far west
edge of the area Ole Boy Mine appear to be strictly gold and two other
sets of un-named workings on the east side of the area, are thought to be
placer deposits, one being a gold placer, the other is thought to be a
gold and cinnabar(?) placer. Some of these mineral occurrences appear to
have had some production, namely the Ole Boy Mine, the Krug Mine, the
gold-cinnabar "placer" and possibly an un-named lead-silver "mine" located
in the south-center of the area. However, due to a lack of recorded data
it is impossible to come up with any kind of production figures.
GEOLOGIC SETTING
Several rock types and ages thereof are found in this area. The
oldest is a small section of the Happy Creek volcanic series which is
found on the south and southeast side of the Jungo Hills. A description of
this unit will not be given here as it is given in the descriptions of the
Jackson Mountains and Red Butte districts. The next youngest unit is an
undivided and un-named group of volcanic and sedimentary rocks. They are
Permian-Triassic in age and are found composing the bulk of the Jungo
Hills, and in the approximate west center of the area. This group overlies
the Happy Creek Group with a gradational contact. These rocks have all
been metamorphosed but consisted originally of a lover part of interbedded
graywacke, basic volcanic rocks, silty cherty shale, pebble conglomerate,
and some silty and siliceous limestone, grading upvard into a section
vhich is predominantly shale with thin chert, limestone, and dolomite
beds. Next in age is a Triassic-Jurassic un-named and undivided unit made
up of phyllite, slate and quartzite. This unit as mapped in the southeast
part of the Jackson Mountains resembles the Raspberry Formation. Next is a
series of Tertiary units, the largest of which is an undivided and
Jungo Area - 1

un-named unit of volcanic and sedimentary rocks. It is found in the center
of the area and covers several square miles. Then there is scattered small
croppings of an un-named and undivided basalt and andesite unit. In this
area it is found mostly along the northeast contact with the previous
unit. It is made up of basaltic and andesitic rocks but throughout the
Jungo area it is mostly andesite. One small outcrop of quartz diorite
intrusive is found in the area and it is located on the west side of the
Jungo Hills. It is thought to be of Cretaceous-Tertiary age.
ORE DEPOSITS
As previously mentioned there is no known recorded history of mineral
production and occurrences in this area. Most of what the writer has
called lead-silver deposits occur in milky white, discontinuous, quartz
veins hosted mostly by a silver-gray phyllite. The workings in the Jungo
Hills are located in a metamorphic sequence of mostly a medium to dark
gray limestone-dolomite and phyllite, which are cut by granitic dikes.
Hineralization here is thought to be copper, silver and gold, most of
which is associated with milky white, iron-stained quartz veins, which in
turn are, in some places, associated with granitic dikes and a granitic
intrusive. A third type of mineral occurrence is found at the Ole Boy
Mine. Here, a milky white brecciated, iron-stained quartz vein fills a
fault which is in what appears to be a monzonitic intrusive.
The only current activity within the area is in the Jungo Hills on a
small prospect, covered by the Stinger claims, about a mile east of the
Krug Mine. Here, a couple of fellows have a "bus camp" and at the time of
visitation were driving a drift west into the hill. This is in an area of
metasediments that are cut by granitic dikes.
For a more detailed description of workings, activity and geology,
the reader is referred to the property examination sheets for the various
workings visited.
SELECTED REFERENCES
Johnson, M. G. (1973) Placer gold deposits of Nevada: USGS Bull. 1356, p.
35.
Willden, R. (1964) Geology and mineral deposits of Humboldt County,
Nevada: NBMG Bull. 59, 154 p.
Jungo Area - 2

LOCATION
JUNIPER RANGE DISTRICT
The Juniper Range district is in the southern end of the Juniper
Range, or Shawave Mountains, in southwestern Pershing County. Several
routes from U.S. Interstate Highway #8O offer access from the east, one
from Brady Hot Springs 15 miles north of Fernley and another from Toulon.
HISTORY
Copper mineralization was being prospected in the district in the
early 1900's. The main activity was along the southern boundary of the
Juniper Range at the Star Mine. Several shafts, a 350 foot tunnel, an
open pit and numerous prospects and trenches were used to explore a
copper-bearing vein system. According to Johnson (1977) the percentage of
copper in the ore was too low to be economical and mining was halted in
1912.
Tungsten was discovered in the vicinity of the Star Mine in 1917 and
was expanded with the development of the Blue Wing Mine 3 miles to the
east. Tungsten mining in the district was a natural extension of the
activity at the Nightingale Mine which was part of a larger tungsten
operation 6 miles to the west. Ownership in the mines passed through a
series of operators starting with the Gold Silver T-ungsten Co., to the
Rare Metals Corp. in 1944, and to the Wolfram Co. in 1952. Tungsten mining
in the district has been idle since 1962 (Stager, in prep).
Total production from the district is not known but an unofficial
estimate has been placed at 16,000 tons of 0.5 percent W03, with the
greatest production coming from the Star Mine.
GEOLOGIC SETTING
Rocks within the district consist almost entirely of granodiorite of
Cretaceous age with several square miles of metasediments cropping out
along both southern flanks of the range. According to Johnson (1977) the
metasediments consist of schists, hornfels, and calc-silicate hornfels of
Triassic and Jurassic age. The tungsten mineralization at the Star Mine is
on the southern edge of a roof pendant of steeply-dipping calc silicates.
The Blue Wing Mine is located in a narrow tactite zone within parallel
limestone ribs that have been converted to calc-silicates. Most of the
tactites consist of brownish garnet and epidote with some quartz and
calcite. The tungsten minerals are scheelite, that ranges in size from
disseminated particles to crystals of an inch or more, and some powellite.
ORE DEPOSITS
At the Star deposit, copper minerals are exposed at the surface in
northwest trending, quartz fissure veins that are hosted in granodiorite.
The veins consist of copper oxides, bornite, chalcocite, tetrahedrite and
minor gold and silver in a white quartz matrix.
Juniper Range District - 1

Tungsten mining at the Star properties was from open-workings
consisting of shallow pits, trenches, shafts along two tactite ore bodies
on the southern edge of the pendent. The ore was reported to be uneven in
grade but of higher value than the Blue Wing Mine. The workings at the
Blue Wing are located along the contact zone of tactite and the
granodiorite and consist of trenches, shallow pits, a shallow shaft, and
several adits. One of the older shafts was nearly obliterated by an open
pit that exposed a 5 foot tactite zone.
Three radioactive samples were collected from calcareous sediments at
the Star Mine during the National Uranium Resource Evaluation of the
Lovelock quadrangle. The samples assayed between 144 and 334 ppm uranium.
SELECTED REFERENCES
Johnson, M. G. (1977) Geology and Mineral Deposits of Pershing County,
Nevada: NBMG Bull. 89.
Stager, H. K. (in prep) Tungsten Deposits of Nevada: NBMG Bull.
Juniper Range Dfstrict - 2

LOCATION
KENNEDY DISTRICT
The Kennedy mining district is located at the southern end of the
East Range, mainly in T28NSR37 and 38E. The district includes mines and
prospects in the vicinity of the old camp of Kennedy on the east side of
the range as well as those in the vicinity of Rileyville (Henrietta Mine)
in French Boy Canyon. Also included are manganese and copper prospects in
the central part of T29N, R37E, and copper-molybdenum mineralization on
the north flank of Granite Peak.
HI STORY
The Kennedy district was discovered in 1891 by Charles E. Kennedy.
During the period of 1893-94 prospectors located numerous claims on a
series of north- and northwest-trending narrow quartz veins in the
vicinity of the Imperial and Gold Note mines in Kennedy Canyon on the east
side of the mountain range (Vanderburg, 1936; Johnson, 1977, p. 64). These
early workings were in the shallow oxidized zone, and the ores contained
free-milling gold. Little work was apparently done in the sulfide zone
before 1900. The mines were operated intermittently until 1950, but most
of the development and production was between 1893 and 1905. After 1900,
most of the mining was done by lessees (Johnson, 1977, p. 64). About
$300,000 of gold and silver was reportedly produced, mainly between 1894
and 1905 (Muller and others, 1951).
The Henrietta Mine, in French Boy Canyon on the west side of the
range, was reportedly discovered in the 1870'~~ and abandoned after minor
prospecting in the oxide zone. The sulfide zone was explored after the
mine was relocated in 1912. The oxidized zone was worked mainly for its
gold and silver values; leaad, silver, and zinc values increased in the
sulfide zone. The mine was operated intermittently until 1950, but
production has been small (Johnson, 1977, p. 64).
In the late 1970's and early 1980'~~ an exploration program was
carried out on copper-molybdenum porphyry-type mineralization located on
the north flank of Granite Mountain in the central part of the district.
The majority of the geologic mapping, geochemical and geophysical surveys,
and diamond drilling was carried out by William A. Bowes, Inc. (Juhas,
1982; Bowes and others, 1982). The property was inactive in the fall of
1984, probably because of the low interest in copper-molybdenum
exploration at this time.
GEOLOGIC SETTING
Granite Mountain in the central part of the mining district consists
of Triassic granite on the southern flank of the mountain, and an Oligocne
intrusive complex (gabbro-diorite-monzonite-quartz monzonite) comprises
the northern flank (Juhas, 1982). These plutons intrude
Pennsylvanian-Permian siliceous and volcanic marine eugeosynclinal rocks
of the Havallah sequence and Triassic rocks (volcanic flows, tuffs, and
tuffaceous sedimentary rocks) of the Koipato Group (Johnson, L977, p. 64;
Kennedy District - 1

Whitebread and Sorensen, 1980). A small sliver of carbonate rocks of the
Triassic Natchez Pass Formation overlies the Koipato at the eastern edge
of the district (Johnson, 1977, p. 65).
Juhas (1980) reports that emplacement of the Oligocene diorite,
monzonite, syenite and quartz monzonite was accompanied by pervasive
potassium metasomatism and weak propylitic alteration. A major granitic
body, which was intruded next, was accompanied by sericite-quartz-pyrite
alteration. This was followed by a sequence of intermediate to felsic
porphyritic dike rocks; associated with this event is potassic and
propylitic alteration and associated chalcopyrite-molybdenite
mineralization. The final igneous activity was the emplacement of diabase
dikes and a rhyolite porphyry pluton. Juhas (1980) relates extensive
pyrite-sericite-clay alteration and precious-base metal vein
mineralization in the surrounding rocks to the rhyolite porphyry pluton.
ORE DEPOSITS
The mineralized area in the Kennedy district occurs in and around an
Oligocene stock of monzogranite to granodiorite compositon. Copper and
molybdenum concentrations occur within the intrusive rocks, and,
accordingly to Bowes and others (1982), lead, zinc, silver, and locally
gold deposits are zonally arranged around the intrusive complex.
In the mid 1970'~~ W. A. Bowes, Inc. found anomalous copper values in
soils over a broad area of granodioritic rocks on the north flank of
Granite Mountain. Diamond drilling in the area has putlined overlapping
zones of molybdenum and copper in the subsurface. Molybdenite and
chalcopyrite reportedly first occur at about LOO feet below the surface.
The zones rich in chalcopyrite and molybdenite are about 460 m wide, but
occurrences of molybdenite and chalcopyrite in drill core extend over a
much larger area (Bowes and others, 1980, p. 433). The whole mineralized
area is characterized by potassium metasomatism over a distance of about
1.8 km in one direction. Propylitic alteration is also associated with the
copper-molybdenum mineralization and the mineralizing event is believed to
be associated with intermediate to felsic porphyry dikes (Juhas, 1980).
Vein deposits in the vicinity of the old camp of Kennedy on the east
side of the East Range occur in Oligocene intrusive rock, in Mesozoic
Koipato Group volcanic rocks, and in sedimentary and volcanic rocks of the
Paleozoic Havallah sequence. These veins are a network of intersecting
quartz pyrite veins which contain minor calcite and galena, sphalerite,
chalcopyrite, arsenopyrite, pyrite, tetrahedrite, pyrrhotite (Muller and
others, 1951), chalcocite, some argentite, and gold (Wallace, 1974).
Tourmaline is present in some veins and as a wallrock alteration mineral;
specular hematite is reported from the Borlasca Mine. Supergene minerals
recognized include malachite, azurite, chrysocolla, chalcocite, covellite,
and cuprite. Argentite in the ore replaces galena, and may be supergene
(Wallace, 1974, p. 66-70). The veins exhibit open-space and crustiform
textures. The trend of the veins is northwest to west-northwest (Wallace,
1977, pl. 3), and the veins generally dip southwest.
The wallrocks of those veins that cut the Oligocene intrusive rocks
and Havallah sequence rocks are altered in the vicinity of the veins.
Alteration minerals include biotite, tourmaline quartz, and minor calcite
and potassium feldspar. Veins along the southern edge of the district are
localized in shear zones in Koipato Group rocks. The Gold Note and
Kennedy District - 2

Borlaasca Mines are along the main vein in this area. Wallrocks here
contain specular hematite, wollastonite, epidote, calcite, and andradite
garnet (Wallace, 1977, p. 63-64). The oxidized zone, ranging in depth to
50 or 125 feet down dip from the surface, contained 0.75 oz of gold and
12.0 oz of silver per ton (Klopstock, 1913). The secondary sulfide zone
varies from 50 to 75 feet in depth below the oxidized zone and contains
some copper, lead, and zinc with high-grade gold-silver values. The
primary sulfide zone averages 65 feet in depth below the secondary sulfide
zone and contains 0.52 oz gold and 10.0 oz silver with traces and
occasional enrichments of lead, zinc, and copper (Johnson, 1977, p. 65).
The Henrietta Mine, located in French Boy Canyon on the west side of
'the East Range, is developed along a quartz-sulfide vein that varies from
a few inches to 4 feet in thickness in a thrust(?) fault in greenstone and
schist of the Havallah sequence. In the upper part of the fault zone, the
vein has been completely oxidized and the ore minerals are earthy oxides
and carbonates of lead and zinc. In the lower levels, below 400 feet(?)
from the surface down the dip of the vein, sulfides predominate over
oxidized material - principally galena, sphalerite, and pyrite, with minor
chalcopyrite as narrow bands or ribbons generally on the foot and hanging
walls of the fault, occasionally at a few places within the vein. At
depth, the banded structure of the vein is less apparent; quartz and
sulfides appear to be in more or less intimate mixture (Johnson, 1977, p.
65).
Approximately 3.5 km northwest of the Henrietta Mine, north of French
Boy Canyon at the front of the range (S33,T29N,R37E) is a hill locally
known as Jasperoid Peak. This area, a reported gold-exploration target
(Bowes and others, 1982, fig. 2), consists of jasperoid and jasperoid
breccia developed in the Havallah sequence (Whitebread and Sorensen, 1980).
In the vicinity of Jasperoid Peak, in S/2, S34,T29N,R37E are copper
prospects at several old shafts, adits, and pits which reportedly expose
massive sulfide mineralization (Whitebread and Sorensen, 1980; Hallof,
1982, p. 378). These reported occurrences could be volcanogenic exhalative
massive sulfide mineralization like that at the Big Mike Mine in the
northern Tobin Range (Tobin and Sonoma Range mining area).
Whitebread and Sorensen (1980) show numerous manganese prospects
located to the northeast of French Boy Canyon in S/2,T29N,R37E. These
manganese occurrences are not described elsewhere, but based on their
presence in oceanic eugeosynclinal rocks of the Havallah sequence, they
are most probably syngenetic volcanogenic exhalative deposits like those
elsewhere in Pershing and Humboldt Counties.
SELECTED REFERENCES
Bowes, W. A., Kutina, Jan, Fredriksson, Kurt, and Golightly, D. W. (1982)
A porphyry Mo-Cu discovery at Granite Mountain, Nevada: predictions
based on mineralogical and geochemical study of zoning: Global
tectonics and metallogeny, v. 1, no.,4, p. 402-439.
Hallof, P. G. (1982) Reconnaissance and detailed geophysical results,
Granite Mountain area, Pershing County, Nevada: Global tectonics and
metallogeny, v. 1, no. 4, p. 374-400.
Kennedy District - 3

Johnson, M. G. (1977) Geology and mineral deposits of Pershing County,
Nevada: Nevada Bureau of Mines and Geology Bulletin 89.
Juhas, A. P. (1982) Preliminary geology of the Kennedy porphyry molybdenum-
copper district, Pershing County, Nevada: Global tectonics and
metallogeny, v. 1, no. 4, p. 356-372.
Klopstock, Paul (1913) The Kennedy mining district, Nevada: American
Institute of Mining Engineers Bulletin, v. 77, p. 1041-1046.
Kutina, Jan, and Bowes, W. A. (1982) Structural criteria defining the
Granite Mountain area in NW-Nevada as a target for mineral exploration:
Global tectonics and metallogeny, v. 1, no. 4, p. 336-354.
Muller, S. W., Ferguson, H. G., and Roberts, R. J. (1951) Geology of the
Mount Tobin quadrangle, Nevada: U. S. Geological Survey Map GQ-7.
Ransome, F. L. (1909) Notes on some mining districts in Humboldt County,
Nevada: U. S. Geological Survey Bulletin 414.
Thurber, J. E. (1982) Petrology and Cu-Mo mineralization of the Kennedy
stock, East Range, Pershing County, Nevada: M.S. thesis, Colorado State
University, Fort Collins.
Vanderburg, W. 0. (1936) Reconnaissance of mining districts in Pershing
County, Nevada: U. S. Bureau of Mines Information Circular 6902.
Wallace, A. R. (1974) Geology and ore deposits, Kennedy mining district,
Pershing County, Nevada: M.S. thesis, University of Colorado.
Whitebred, D. H., and Sorensen, M. L. (1980) Preliminary geologic map of
the Granite Mountain quadrangle (SE/4 Kyle Hot Springs quadrangle),
Pershing County, Nevada: U. S. Geological Survey Open-File report
80-7 15.
Kennedy District - 4

LOCATION
LkKE DISTRICT
The Lake district includes the southwest portion of the West Humboldt
Range and the Mopung Hills in northern Churchill County. Most of the
prospects in the district lie to the west of Topog Peak in Sections 1, 2,
9, and 10, T24N, R29E.
HISTORY
The earliest record of mineral activity in this district is from 1868
when sodium nitrate deposits were located in the Mopung Hills. One of
these hills, of a marked red color, was then known as Niter Butte and the
nitrate salt locality was said to have been known to early Indians.
Activity on the niter claims continued intermittently into the 1880's and
revived again about 1902. No production is recorded, however, and the
deposits have been abandoned for many years (Vanderburg, 1940). Ruins of
an old limestone kiln on the west flank of the Mopung Hills is evidence of
a early attempt to produce lime from deposits in the hills to the east.
Vanderburg (1940) reports that a small tonnage of limestone was shipped
from this area around 1900.
Lincoln (1923) reports that a few cars of lead-silver-antimony ore
were produced from the district in the period 1860-1880 and a one-ton lot
of antimony ore was produced from the Green Mine in 1941 (Lawrence, 1963).
There has been no production recorded since that time. Recently, interest
has been renewed in the district, and a large block of claims has been
staked on the northeast portion of the Mopung Hills. Considerable
trenching and drilling has been done and it is understood that explora-
tion, probably for precious metals, will be continued.
GEOLOGIC SETTING
The West Humboldt Range extends south into Churchill County from
Pershing County as a divide between the Humboldt Sink on the west and the
Carson Sink on the east. According to Wilden and Speed (1974) the range is
probably a horst; the northern end has been tilted to the east, whereas
the Mopung Hills, at the southern end, may be tilted to the west. Rock
units exposed in the West Humboldt Range are Lower Jurassic sedimentary
rocks, Middle Jurassic limestone and quartz arenite, basalt, Cretaceous(?)
granodiorite, and Tertiary volcanic rocks. Lower Jurassic rocks crop out
discontinuously along the entire length of the range in Churchill County
and form the oldest exposed unit. Limestone and marble of Middle Jurassic
age overlie the older rocks. In the Mopung Hills this limestone and marble
unit contains gray limestone, limestone breccia, gypsum, and quartz
arenite. The limestone and marble unit is almost everywhere overlain by
greenstone or gabbro (Wilden and Speed, 1974). Tertiary volcanic rocks
consist of welded rhyolite tuff and tuff breccia which have been deposited
on a surface of variable relief. The volcanic stratigraphy has not been
Lake District - 1

studied in detail and it is possible that some of the rhyolite originated
from a volcanic center in the Mopung Hills.
ORE DEPOSITS
Mines and prospects in the Lake District are located in three
clusters within the area; narrow quartz-calcite veins have been prospected
in an area northwest of Topog Peak, mineralized breccias and shear zones
associated with a rhyolite-hornfels contact have been explored on the east
side of the Mopung Hills, and small antimony occurrences have been mined
from an area on the west side of the district.
The quartz-calcite veins, in Section 1, T23N, R29E, strike northwest
and cut quartzite. The veins contain small amounts of hematite-after-
pyrite but no other visible mineralization.
Old workings on the east side of the Mopung Hills explore a gossan
zone cemented with gypsum and native sulphur which occupies a northeast-
trending shear zone in altered sedimentary rocks. The geologic map of this
area (Wilden and Speed, 1974) indicates that the breccia area is along the
trace of a thrust fault separating two sedimentary units. The alteration
resembles that of a hot springs system. About one mile to the southwest,
generally on strike, a wide shear zone in rhyolite was noted which
contains barite crystals in open spaces in silicified breccia.
The small antimony occurrences described by Lawrence (1963, p. 35)
were not located during our examination. Antimony minerals are described
as occurring along northeast-trending fracture zones in silicified
limestone and in shales. The mined material has come from mineralized
boulders from a cemented rubble zone overlying bedrock. The source of the
mineralized boulders have not been found. This area is the type locality
for the mineral "mopungite", an oxide antimony mineral found at the Green
Prospect (Williams, 1985).
GEOCHEMICAL RELATIONSHIPS
None of the ore samples collected from prospects in this district
were particularly high in any element. Boron was found to be present in
fairly high amounts in all samples, gold was detected in one sample from
the sulphur-rich gossan on the east side of the Mopung Hills. This sample
was also high in mercury. Only one high arsenic value was detected, and
antimony values were uniformly low.
SELECTED REFERENCES
Lawrence, E. F. (1963) Antimony Deposits of Nevada: NBMG Bull. 61.
Lincoln, F. C. (1923) Mining Districts and Mineral Resources of Nevada:
Nevada Newsletter Publishing Co., Reno.
Vanderburg, W. 0. (1940) Reconnaissance of Mining Districts in Churchill
Co., Nevada: USBM IC 7093.
Lake District - 2

Willden, R., and Speed, R. C. (1974) Geology and Mineral Deposits of
Churchill County, Nevada: NBMG Bull. 83.
Williams, S. A. (1985) Mopungite, a new mineral from Nevada: Mineralogical
Record, v. 16, n. 1, p. 73-74.
Lake District - 3

LOCATION
LEADVILLE DISTRICT
The Leadville district is located along what used to be State
Highway 34, approximately 38 miles north of Gerlach. The town site is
located approximately one mile to the west of the raod. For purposes of
this report the Hog Ranch Gold Area will be included here. This area lies
about 3-4 miles to the north-northwest of Leadville and if it were back
in the days when mining districts were a recognized entity it more than
likely would have been part of the Leadville district.
HISTORY
Bonham has as good a write-up on the history of Leadville as anyone,
although historical write-ups can also be found in Lincoln and Overton:
"The Leadville district is the largest producer of lead and silver in
Washoe County .... There is very little published information concerning
the early history of the district. Presumably the district was discovered
in the early 1900's. According to the 1909 edition of Mineral Resources
of the United States, development work was proceeding in the district
during that year. The year 1910 saw the first production from the
Leadville district."
"The only important producer in the district to date [still
applicable in 19851 has been the Leadville mine. John Harmon acquired the
Leadville mine, apparently before 1909, and organized the Tohoqua Mining
Co., which developed the mine, built a 60-ton-perday mill utilizing
gravity concentration and operated the Leadville mine from 1910 to 1918
.... "The Tohoqua Mining Co. experienced financial difficulties and went
into receivership in 1918. The Leadville mine was then acquired by A.A.
Codd, who organized the Leadville Mining Co. in 1920. From 1920 until
1925, the Leadville mine produced in excess of 1,000,000 ounces of
silver, 3,500,000 pounds of lead, and minor amounts of gold and copper
with a gross value in excess of $1,150,000. The mill erected by the
Leadville Mining Co. was destroyed by fire in 1925 and was not rebuilt.
After the fire the company ceased operation of the mine for their own
account and turned the mine over to leasers, who mined high-grade, direct
shipping ore from 1926 through 1928 when the Leadville mine was ordered
closed by the State Inspector of Mines after a fire within the mine. The
main Leadville mine has not been worked since 1928."
"There was essentially no production from the Leadville district
between 1928 and 1938. A few tons of ore were produced from the Swingle
vein in 1939 and 1940. The district has been idle since 1941 ...."
The visit made to the Leadville district during this contract showed
that no work has been done in the district for many, many years. Most of
the workings are caved and there are no buildings around. There was a new
claim block which covered the area. They were staked in June 1984 by
Transwestern Mining Co. of Reno, Nevada. They are called the Prong
claims.
Leadville District -1

Northwest of Leadville, approximately 3-4 miles, and north of the
summit of Hog Ranch Mountain is found a new gold discovery which goes by
the name Hog Ranch Gold Prospect. There has never been any production
from this area, nor even any old prospect pits or sites. It is thought
that the discovery was made by Noranda Exploration. They had control of
the property for 2-3 years, about 3-4 years ago, and did extensive
exploration - dozer cuts/roads, sampling, mapping and drilling. Noranda
drilled out a very low-grade deposit but then dropped the property. It is
currently under the control of Ferret Exploration, who headquarters in
the Denver, Colorado area. They are in the process of putting the
property into production.
GEOLOGIC SETTING
According to Bonham, The area around Leadville proper is composed of
the South Willow Formation. This formation is Oligocene in age (Early
Tertiary) and is made up of basalt, andesite, and dacite flows, con-
glomerate, mud flow breccia, and associated intrussive phases. This unit,
in the Leadville area, is bounded on the north and west by faults. The
Hog Ranch Gold Prospect lies northwest of the juncture of the two above
faults and is found in the Canyon Rhyolite Sequence. This unit is Miocene
in age and unconformably overlies the South Willow Formation. It is
composed of flows, protrusive domes and subordinate welded ash flows of
soda rhyolite. It is locally interfingered with the High Rock Sequence,
but usually the High Rock sequence lies with marked unconformity upon the
Canyon Rhyolite.
ORE DEPOSITS
According to Bonham: "The host rocks for the ore deposits of the
Leadville district are andesite flows and associated dacite porphyry
intrusives of the Oligocene age South Willow Formation ...." Several
dacite porphyry dikes, up to 50 feet thick, cut the andesite flows of the
South Willow Formation in the Leadville district. The dikes are cogenetic
with the andesite flows."
"To date, the known economic mineralization in the Leadville
district occurs in two veins, the Leadville vein, from which practically
all the production has come, and the Swingle or south vein. The Leadville
vein strikes about east-west and dips steeply north. The Swingle vein is
a parallel structure south of the Leadville vein."
Bonham's description of the workings is taken from two reports which
are on file at the Nevada Bureau of Mines. One of the reports was written
by H.W. Stotesbury in 1917; the other was written by J.A. Burgess in
1926.
Quoting Bonham: "The main workings on the Leadville vein consist of 0
a 2,000-foot haulage tunnel and a two compartment 800-foot winze at a 75
inclination. The head of the winze is 250 feet vertically below the vein
outcrop. In 1926 the 700 level was being mined and the 800 level was
being opened up ...."
Leadville District -2

During Bonham's visit in 1968, "The main haulage tunnel is caved at
the portal, and the Harmon shaft is also partially caved, consequently
the mine workings are inaccessible." From all appearances no work has
been done since Bonham's visit and consequently the workings are in worse
shape.
"The workings on the Swingle vein consist of a 400-foot cross-cut
tunnel, and drifts east and west along the vein."
"The Leadville vein occurs in a fault zone which cuts andesite flows
and dacite porphyry dikes of the South Willow Formation. The ore
mineralization consists of irregular lenses, stringers, and
disseminations of galena, sphalerite, pyrite, and minor chalcopyrite,
with quartz and calcite, replacing gougey, brecciated andesite and dacite
porphyry. Disseminated pyrite and minor amounts of lead and zinc occur in
the wallrock adjacent to the vein ...."
"The width of the main orebody averaged 3 to 4 feet and occasionally
reached 6 feet. The main ore shoot extended 900 feet along strike and
pitched steeply west. In places, the vein consists of up to 8 inches of
solid sulphide ore. The ore shoot extends below the deepest workings, the
800 level."
"The ore shoot reportedly was terminated to the west by a fault or
dike." Burges thought that the ore shoot was cut off by a dike and that
one of the lower levels should be driven west, a sufficient distance to
check out the possibility of continuation of ore to the west. Burgess'
recommendations were never carried out.
Even today the area remains unexplored even though two differnt
claim blocks have covered the area. Pictures #5 and.6 were taken here and
sample 82405 collected.
The Hog Ranch Gold Prospect is in heavily iron-stained, in places,
rhyolite rocks of the Canyon Rhyolite Sequence. In places these rocks are
veined with opalitic material. For 1985 additional drilling and
metallurgical work is planned with the final decision to be an operating,
open-pit mine. Announced reserves are 2.5 million tons averaging 0.085
ounces of gold per ton.
SELECTED REFERENCES
Bonham, H.F., and Papke, K.G. (1969) Geology and mineral deposits of
Washoe and Storey Counties, Nevada: Nev. Bur. Mines Bull. 70, 140 p.
Lincoln, F.C. (1923) Mining districts and mineral resources of Nevada:
Reprint Ed. 1970, Douglas McDonald, Verdi, Nev., pp. 236, 237.
Overton, T.D. (1947) Mineral resources of Douglas, Ormsby, and Washoe
Counties, Nevada: Nev. Bur. Min. Bull. 46, pp. 67-69.
The Northern Miner Newspaper, July 26, 1984.
-.
Leadville District -3

LOCATION
LEONARD CREEK DISTRICT
The Leonard Creek district is located in the southern half of the
Pine Forest Range, northern Humboldt County, and includes the area around
Dyke Hot Spring. The Dyke Hot Springs area is sometimes referred to as the
Dyke, Florence, or Boyd Basin district but these usages appear to be local
and unofficial. It may, however, be improper to include the Dyke area
within the Leonard Creek district but we have done so for convenience
sake. A good dirt road traverses the eastern and southern margins of the
Pine Forest Range passing by both the Woodward Ranch and Leonard Creek
Ranch. Access to the the two ranches is via dirt roads leading west from
State Highway 140, about 60 miles north of Winnemucca. Topography in the
district is steep, exceeding 7,000 feet in places and most mines and
prospects are generally inaccessible.
HISTORY
Efforts to promote the Nevada King Mine in 1906 appear to be the
first recorded mining activity in the district. The mine is located in
sec. 30, T44NSR30E near the headwaters of Pass Creek Canyon. Lawrence
(1963) reported the first production from the mine was in 1927 and it
operated intermittently thereafter until 1942. Total production is
reported to be 22 tons of antimony metal.
According to Vanderburg (1938), placer gold was discovered on Leonard
Creek in 1914. Snow Creek and Tepee Creek, tributaries of Leonard Creek,
along with New York Canyon were all worked by placer miners before the
activity ceased in the mid 1930's. There are, however, large areas of the
drainages that were not worked. Like most small placer operations, the
mining was done by individual miners so production figures are incomplete
and have little meaning.
Mining activity in the area of Dyke Hot Springs dates from about 1915
when prospecting began along quartz vein systems. Locally, rich pockets of
gold and silver ore were encountered but no production figures exist. The
largest workings are associated with the Hapsgood Silver Mine in sec. 1,
T42N,R30ES the Yellow Dog and Dyke Springs Mine in sec. 36, T43NsR30E, and
the Bobby Mine in Dyke Canyon. A number of smaller, unnamed mines and
prospects explore quartz veins along the east side of the Range from
Cherry Creek north to Pass Creek Canyon.
The Nevada Bureau of Mines has a report on file for a property
described as the "Oklahoma Gold Mining Company", dated 1914, that relates
to a mine in the Dyke District with extensive workings and good assays.
The report does not, however, provide a precise location for the mine, and
none of the properties examined match its description.
In 1955 a tungsten discovery was made at the present site of the
Saddle Mine in sec. 17, T43NSR30E. During the same year 250 tons of
tungsten ore were mined from the deposit and shipped to the Getchell mill
for processing.
During the late 1970's uranium was discovered in shear zones within
metasediments near the head of Snow Creek in sec. 35, T43NSR28E. In the
Leonard Creek District - 1

early 1980's these deposits were explored by drilling and were determined
to be uneconomical at the time. A prospect above the springs in the same
section 35 exposes a pegmatitic quartz vein containing large rossettes of
molybdenite and minor copper sulfides.
GEOLOGIC SETTING
The oldest rocks exposed in the Leonard Creek district are
metavolcanics of the Happy Creek Formation of Permian age which are
exposed along the east and west flanks of the Range. A single exposure of
Jurassic-Triassic limestone crops out along the south eastern part of the
Range while phyllites, slates, and quartzites of the same age survive as
pendants or flank the Range to the east. The northern portion of the
district is dominated by granodiorites and monzonites that form the ridges
and highlands of the central portion of the Range. The southern portion of
the district is composed of undifferentiated volcanic and sedimentary
rocks of Tertiary age.
ORE DEPOSITS
Antimony mineralization at the Nevada King Mine occurs entirely along
shear zones in metasediments. According to Lawrence (1963) the ore exists
as lenses, pods, veinlets, and as single crystals of stibnite, much of
which is covered by yellow antimony oxides.
The quartz vein systems in the Dyke Hot Springs area are commonly
narrow, highly oxidized, almost always iron stained, usually brecciated
and sometimes gossan like. They normally trend north and dip at steep
angles. Free gold is present but rarely visible and silver is apparently
present in tetrahedrite or, as in the case of the Hapsgood Mine, it may be
present within the lead minerals.
The tungsten mineralization at the Saddle Mine occurs along and near
the contact between quartz monzonite or granodiorite and limestone.
According to Stager (in prep) the mineralization consists of scheelite,
minor molybdenum, pyrite, and some secondary copper in a gangue of
epidote, quartz, calcite, garnet, and feldspars. Grade of the ore ranges
from 0.3 percent to 1.75 percent W03. Three ore zones are exposed from the
crest of the range westward for about 800 feet. Very little development
work or mining has taken place to date.
Uranium mineralization at Snow Creek occurs most commonly in pockets
or masses of chalcedony that form along fractures or in shear zones in
metasediments. In one place, uranium is concentrated on limonitized
fractures in an alaskite dike. The uranium appears to have been introduced
along with silica by hot water ascending along the fractures.
GEOCHEMICAL RELATIONSHIPS 7
Of the seven quartz veins sampled in the Dyke Hot Springs all but one
had detectable gold. The six samples reporting gold had values ranging
Leonard Creek District - 2

from 3.8 to 140 ppm gold. Silver values ranged from 5 to 5,000 ppm with
anomalous lead, copper, zinc, and arsenic.
SELECTED MFEMNCES
Lawrence, E. L. (1963) Antimony Deposits of Nevada: NBMG Bull. 61.
Stager, H. K. (in prep) Tungsten Deposits of Nevada: NBMG Bull.
Vanderburg, W. 0. (1938) Reconnaissance of Mining Districts in Humboldt
County, Nevada: USBM IC 6995.
Willden, R. (1964) Geology and Mineral Deposits of Humboldt County,
Nevada: NBMG Bull. 59.
Leonard Creek District - 3

LOCATION
NATIONAL DISTRICT
The National District is located on the western slope of the Santa
Rosa Range in northeastern Humboldt County. The principal mines of the
district are found in Sections 27, 28, 33, and 34, T46N, R39E about 15
miles southeast of the town of McDermitt. Also included in the National
District are mines on the northeast slopes of Buckskin Mountain about 2
miles to the southeast of the National Mine.
HISTORY
The earliest work in this district was in the area just north of
Buckskin Peak. Prospectors, presumably looking for gold and silver,
staked claims there prior to the discovery of the main National District
(Lindgren, 1915). The date of this activity and any production that may
have resulted are, however, unknown. The deposits at National were
discovered in 1907 and production began in 1908. Rich ore was discovered
on the Stall property (National Mine) in 1909 and ore valued at up to $30
per pound was produced for a short period of time. The major period of
activity at National ended in 1917 but production is recorded from the
camp in 1918, 1924, and 1933 through 1940. Total production for the
period 1909-1940 is $3,914,596 (Couch and Carpenter, 1943). Sometime
between 1922 and 1928 mercury was discovered on Buckskin Peak adjacent to
the old Buckskin National gold property. About 150 flasks of mercury were
produced from the occurrence up through 1943 (Bailey and Phoenix, 1944),
and the property was again mined in the last 2960's.
There has been intermittent, small-scale activity in the main
National district over the years since 1940, but no production has been
recorded. To the south, in the Buckskin National area, ASARCO has
conducted extensive exploration in recent years but the results of this
work are not known.
GEOLOGIC SETTING
The northern Santa Rosa range in the vicinity of National is built
up of Tertiary lavas among which basalts in many superimposed flows
predominate. According to Lindgren (1915) the oldest of these rocks are
lake beds and tuffs. These, in turn, are overlain successively by latite
and trachyte, basalt, and rhyolite. Lindgren (1925) correlated the basalt
with the Miocene Columbia River basalt to the north, and the other
volcanic rocks are possibly also of Miocene age. The upper rhyolite is
associated with the mineralization at the National Mine. On the top of
Buckskin Peak a cinnabar-bearing siliceaus sinter forms a blanket that
rests on the upper rhyolite. The age of the sinter is uncertain but
Lindgren (1915) regarded it as a surficial deposit formed in late
Tertiary time, soon after the extrusion of the rhyolite, and genetically
related to the veins of the district.
National District - 1
9 8

ORE DEPOSITS
The mineral deposits at National are narrow fissure veins with a
general northerly trend and steep east or west dip. The veins intersect
latite, rhyolite, basalt, tuff, and trachyte and the country rock near the
veins is altered by the development of pyrite, calcite, serlcite, and
adularia. The veins consist of sheared rock a few feet wide and have a
well-marked footwall. Seams of quartz lie along foot, hanging, or
intermediate walls. The quartz seams generally show symmetrical banding
and are often vuggy. The most characteristic mineral present is stibnite
for it occurs in almost every vein that has escaped oxidation. Pyrite,
chalcopyrite, arsenopyrite, sphalerite, and galena occur in small grains
in the vein material. Native gold was found chiefly in one rich ore shoot
of the National vein where it occured as electrum containing about 50
percent silver (Lindgren, 1915).
The mineralization at Buckskin Peak (Buckskin National mine) consists
of a complete mineralized system from surface mercury deposits in sinter
to stibnite-rich upper portions of veins to deeper ruby silver and
gold-bearing quartz veins. Most of the production of this part of the
district probably came from one vein, the Bell, which consists of a strong
iron-sulfide zone several meters wide with a crustified quartz vein in the
center. Minerals present in the veins of this part of the district include
native gold (as electrum), pyargyrite, tetrahedrite, galena, pyrite,
chalcopyrite, sphalerite, bornite, and stibnite. Cinnabar is found in the
slnter deposits on Buckskin Peak, and represent the surface expression of
the underlying precious metal vein system.
GEOCHEMICAL RELATIONSHIPS
Geochemical data from this district showed metal relationships which
could have been predicted from descriptions of the mineralogy of the
deposits. Gold was detected in most samples, silver values were high and
arsenic and antimony were present in anomalous amounts. Samples collected
from the National mine were higher in lead, zinc and copper than were
those samples collected from the Buckskin National mine. Values for all
other elements were generally low.
SELECTED REFERENCES
Bailey, E.H., and Phoenix, D.A. (1944) Quicksilver Deposits in Nevada:
NBMG Bull. 41.
Couch, B.F., and Carpenter, J.A. (1943) Nevada's Metal and Mineral
. Production: NBMG Bull. 38.
Lincoln, F.C. (1923) Mining Districts and MineraL Resources of Nevada:
Nevada Newsletter Publishing Co.
Lindgren, W. (1915) Geology and Mineral Deposits of the National Mining
. District, Nevada: USGS Bull. 601.
National District - 2

Roberts, R.J. (1940) Quicksilver Deposits at Buckskin Peak, National
Mining District, Humboldt County, Nevada: USGS Bull. 922-5.
Vanderburg, W.O. (1938) Reconnaissance of Mining Districts in Humboldt
County, Nevada: USBM IC 6995.
Willden, R. (1964) Geology and Mineral Deposits of Humboldt County,
Nevada: NBMG Bull. 59.
National District - 3

LOCATION
MILL CITY (CENTRAL) MINING DISTRICT
The M i l l City mining district is located in the Eugene Mountains in
northern Pershing County on the Humboldt County border. The mines on the
north end of the range are in both Humboldt and Pershing counties and are
accessible via poorly maintained dirt roads that lead south from the
Pronto tailroad siding. The mines on the south end of the range, in
Pershing County, are accessible via a narrow but paved mine access road
that leads into the old camp of Tungsten From Mill City.
HISTORY
Historically, all of the Eugene Mountains were included in the
Central mining district which was organized in 1862. The first work in
this district was by L. Vary in 1856 who discovered the Fifty Six copper
mine at the southern tip of the range. This is the First known mineral
discovery in the area now included in Pershing County. In the 1860's work
was done at the Golden Age and other mines on the northern edge of the
range. Most of the activity at these mines had ceased by 1876 but some
bullion production was reported from the Blackbird mine in 1908, and the
Fifty Six mine produced some copper ore in 1917. Total recorded production
for the district, 1871-1899, is only $14,648. Tungsten was discovered in
the southern portion of the district in 1914 and, beginning in 1917,
tungsten has been the major metal produced from this district. The
tungsten mining area is on the southern tip of the range, close to the old
town of Mill City and the tungsten mines are commonly referred to as being
in the M i l l City mining district. Total recorded production of the M i l l
City district, 1917 through 1958, is about 2 million units of W03.
GEOLOGIC SETTING
The Eugene Mountains are largely composed of a thick section of
Triassic age shales, quartzites, and limestones. In mid-Mesozoic time,
regional westwardly-directed folding and thrusting folded and locally
overturned the sedimentary section. During late Cretaceous and early
Tertiary time, the Triassic rocks were intruded by a number of small
stocks and dikes. These intrusive rocks are mainly granodiorite in
composition although the larger bodies vary to quartz monzonite and all
are commonly cut by pegmatite and aplite dikes. Near the intrusive
contacts, the sedimentary rocks are locally metamorphosed to hornfels,
marble, and tactite.
.
ORE DEPOSITS
Old Central District Occurrences
With the exception of the Fifty Six copper mine, all of the pre-1900
vintage mines in the Eugene range are very similar in structure and
Mill City (Central) Mining District - 1

mineralization. Most of the mines were developed on prominent veins of
milk-white ("bull") quartz which occupy northeast-trending shear zones in
hornfels and granodiorite. All of the occurrences appear to be either
directly related to a hornfels-grariodiorite contact or are near a contact
and, at several properties, the veins follow the contact itself. The veins
and surrounding wallrocks are commonly stained with hematite and green
arsenate minerals. Sulfides are sparse and are restricted to mainly pyrite
and arsenopyrite with local concentrations of galena, sphalerite, and
tetrahedrite. Wallrocks are commonly kaolinized and silicified near the
vein boundaries. The Fifty Six copper mine was developed on a wide shear
in granodiorite which has been kaolinized and mineralized with pyrite and
copper sulfides. The outcrop of the deposit is stained green from thick
fracture coatings of chrysacolla and other secondary copper minerals. At
the time of our examination (September 1984, April 1985) the only activity
on these deposits consisted of mining of some dumps at the Golden Age mine
and some construction activity at the Republican Mine.
Mill City District
The major ore deposits in the M i l l City portion of the Eugene range
are the tungsten mines located south of Pole Canyon along the southeast
edge of the mountain front. These tungsten (scheelite) deposits occur in
thin but persistent limestone beds in the lower part of the middle
Triassic Raspberry Formation that have been altered to tactite. The main
production has come from a few distinct beds and the scheelite-bearing
tactite bodies within these beds have formed near the points of contact of
the beds with the Springer granodiorite stock. In the area of the mines,
the limestone beds dip steeply and the tactite replacement bodies have the
form of narrow, near-vertical lenses of tactite in marbelized limestone.
Scheelite is present in the ores as disseminations and fracture coatings
in the tactite bodies and as irregular blebs and crystal masses in quartz
veins which cut both granodiorite and tactite. The mineralized zones also
contain small amounts of molybdenite, chalcopyrite, rare bismuthinite, and
up to several percent pyrite. The most important scheelite ore bodies are
localized in those areas displaying intense silication and silicification.
The Springer stock, the probable source for the tungsten mineralization,
has been dated at 78.4+/- 2.9 my.
The major tungsten production from the district originated from the
Stank, Humboldt, and Springer mines on the west side of the Springer
stock, and from the Sutton One and Sutton Two mines on the east side of
the Springer stock. All of these deposits were operated by one company as
the Nevada-Massachusetts property up until 1958 when tungsten mining
ceased due to poor market conditions. In the early 1970's the mines were
acquired by General Electric Co. and, following extensive exploration,
tungsten mining operations were resumed in 1982 with announced reserves
sufficient for 13 to 15 years of operations. Mining ceased after only a
few months, and at this time (1985) the mines are on standby.
-.
GEOCHEMICAL RELATIONSHIPS
Geochem-ical data from the quartz vein deposits in the Old Central
portion of the Eugene range shows virtually every property to have very
high arsenic values. Most have silver, antimony, copper, lead, and zinc,
M i l l City (Central) Mining District - 2

present, and all samples showed detectable gold. Several oE the properties
also reported anomalous cadmium. The samples taken Erom the tactite
tungsten properties in the M i l l City portion of the range showed a quite
diEEerent suite of elements present. In addition to tungsten and
molybdenum, samples Erom these properties were generally high in
manganese, and bismuth but were low in arsenic and antimony and contained
no detectable gold.
SELECTED REFERENCES
Johnson, M.G. (1977) Geology and Mineral Deposits oE Pershing County,
Nevada: NBMG Bull. 89.
Kerr, P.F. (1934) Geology of Tungsten Deposits near M i l l City, Nevada:
NBMG Bull. 21.
Lincoln, F.C. (1923) Mining Districts and Metal Resources of Nevada:
Nevada Newsletter Publishing Co.
Stager, H-K, (in prep) Tungsten Deposits of Nevada: NBMG Bull.
Thompson, T.A., and West, A.A. (1881) History of Nevada: Howell-North,
1958 reprint.
M i l l City (Central) Mining District - 3

LOCATION
MINERAL BASIN
The Mineral Basin district is located in the Buena Vista Hills in T25
and 26NDR34E. The district is predominantly in Pershing County, but
extends into Churchill County. It is accessible via a paved road from
Colado.
HISTORY
Iron ore was first discovered in the area in the 1880's and 500 tons
of ore were shipped to San Francisco (Johnson, 1977). No further
production occurred until 1942-43 when several mines commenced production
including the American Ore Co., Thomas, Segerstrom-Heizer and the Buena
Vista. Various mines in the district produced ore in the 1950's and 1960's
and extensive exploration in the district developed large reserves of
low-grade ore. The discovery of large, high-grade iron ore deposits in
Brazil and Australia in the 1960's essentially removed the main export
markets for Nevada iron ore and production from the district nearly ceased
by 1970. A few carloads of high-grade ore have been produced from the
district in recent years, but the district was idle in 1985. Total
production from the district is over 4 million tons of high-grade iron
ore. Extensive reserves of lorgrade ore are present in the district.
GEOLOGIC SETTING
The Buena Vista Bills are underlain by a lopolithic complex of
gabbroic intrusive rocks and mafic extrusive rocks of Middle Jurassic age.
The gabbro and cogenetic mafic volcanic rocks are overlain unconformably
by Tertiary silicic and basaltic volcanic rocks and by extensive areas of
Quaternary sediments.
ORE DEPOSITS
The iron ore deposits in the Buena Vista Hills occur as vein and
replacement deposits in scapolitized gabbro and maEic metavolcanic rocks.
The iron ore mineralizaton is apparently related to a late stage, deuteric
alteration of the mafic complex. The deposits were localized by major
faults and fault intersections and minable ore bodies are frequently
bounded by faults.
The main ore mineral is magnetite, associated with it are pyrite and
very minor chalcopyrite. The gabbro and.mafic volcanic rocks are highly
scapolitized and are altered to chlorite, scapolite and amphibole in and
adjacent to iron mineralization. Apatite, sphene and calcite occur in some
of the ore. Much of the ore is oxidized to martite.
Mineral Basin District - 1

GEOCHEMISTRY
In addition to iron the ores are anomalous in vanadium, phosphorous
and locally, in copper and titanium.
SELECTED REFERENCE
Johnson, M. G. (1977) Geology and mineral deposits of Pershing County,
Nevada: Nevada Bureau of Mines and Geology Bulletin 89, 115 p.
Mineral Basin District - 2

LOCATION
MOUNT TOBIN DISTRICT
The Mount Tobin mining district is located in the southern part of
the Tobin Range, in eastern Pershing County. It includes properties near
the southern end of the range, in Jersey Valley on the east side of the
range, and continues nearly to Mount Tobin on the north.
HISTORY
The Mount Tobin district is chiefly a mercury district, but it also
contains fluorspar and zeolite deposits and was actively prospected for
precious metals in the early 1980's. Cinnabar was discovered here before
1918, but the ore bodies of the largest mine (about 1500 flasks of
production), the Mount Tobin Mine, were not worked on a large scale until
1940-41 (Bailey and others, 1984). The Mount Tobin Mine was worked again
in the late 1960's, producing at least 14 flasks of mercury.
The Eureka Mine in Hiller Basin in the southern part of the district
was active between 1955 and 1959, and between 1962 and 1971 (Bailey and
others, 1984). It has been inactive since 1971. A few flasks have probably
been produced by mines adjacent to the Eureka Mine (Johnson, 1977, p. 73).
Cinnabar at the Hot prospect or Polkinghorne prospect in the
southwestern part of the district was discovered in 1956; it was explored
in the 1960's and 1970's but apparently has had no production (Lawrence,
1963; Bailey and others, 1984).
The earliest known mining at the Needle Peak fluorspar deposit was in
1950; one carload of ore was shipped in 1951. Development consists of a
few short adit and a trench; some exploratory drilling was done in the
1970's (Papke, 1979, p. 62).
Zeolites were first reported from Cenozoic sedimentary rocks on the
west side of Jersey Valley by Deffeyes (1958, p. 11-12), after discovery
of erionite in samples collected in 1956. The area was claimed by Union
Carbide Corp. in 1958, and by Shell Development in 1963. Mobile Oil Corp.
mined some zeolite-rich rock in the early 1970's, apparently for its own
use in petroleum processing (Papke, 1972 and oral communication, 1984).
GEOLOGIC SETTING
The oldest rocks in the Mount Tobin district consist of Palezoic
chert and clastic rocks of the Havallah sequence. These are unconformably
overlain by a thick group of Triassic carbonate, clastic, and volcanic
rocks. Tertiary volcanic rocks unconf omably overlie these older units .
The Tertiary volcanic rocks consist of silicic ignimbrites which are
overlain by a thick andesite unit consisting of lenticular flows,
agglomerates, and minor associated tuffs. Tertiary sedimentary rocks crop
out on the east flank of the range (Johnson, 1977).
Mount Tobin District - 1

ORE DEPOSITS
The mercury deposits are chiefly in sedimentary rocks of Late
Paleozoic or Triassic age, but lesser amounts of cinnabar are widespread
in andesitic to rhyolitic rocks of mid-Tertiary age. The mineralization is
mostly in or near steep fault zones which trend nearly north, and the
cinnabar is generally accompanied by a little quartz and pyrite. Barite
and stibnite occur with cinnabar at one property (Bailey and others,
1984). Burke (1974) suggests that the mineralization appears to have
occurred in Oligocene time, during the development of an east-west
volcano-tectonic trough and extrusion of andesitic volcanic rocks.
Hydrothermal alteration in the vicinity of the deposits and prospects
consists of bleaching and iron-staining, argillization, and silicification
(Bailey and others, 1984).
With the exception of the Hot prospect (S25,T27N,R38E) at the
southwest end of the range, the mercury mines and prospects are located in
two separate areas. One area is at the head of Golconda Canyon about 6 km
south of Mount Tobin. The second area of deposits is located in Miller
Basin about 5 km south of Golconda Canyon. The major mine in the northern
group is the Mount Tobin Mine; in the southern area the Eureka Mine is the
major property.
The ore deposits at the Mount Tobin Mine are in a tuffaceous
conglomerate of the Triassic China Mountain Formation. They are
concentrated in argillized rocks, along northerly-trending faults of small
displacement. The ore bodies that have been found are shallow and perhaps
formed beneath a capping of altered volcanic rock CJohnson, 1977, p. 74;
Bailey and others, 1984). Cinnabar occurs as cavity fillings in
conglomerate, as a replacement of cement and pebbles, as encrustations,
and as veinlets. Sparse pyrite is present on one dump.
The Blue Bird or Last Chance Prospect is located about 1.5 km
northwest of the Mount Tobin Mine. Cinnabar (with a little pyrite) occurs
as painty films and veinlets in sandstone, shale, and volcanic tuff of the
Triassic Koipato Group. The rocks are locally silicified, bleached, and
argillized along joints (Bailey and others, 1984).
A gold, mercury, and arsenic geochemical anomaly is present in rocks
exposed south of the Mount Tobin Mine (Queenstake Resources Ltd.
Exploration Report, 15 March 84). This anomaly includes the Right Fork
prospect in SE/4, NE/4 S12,T28N,R39E where cinnabar is reported from a
panned dump sample &Bailey and others, 1984). Old workings at the property
explore a N ~~OE, 55 NW quartz vein in chert pebble conglomerate. The vein
contains white chalcedonic to crystalline quartz and sparse limonite. The
vein quartz is commonly pseudomorphic after lamellar calcite.
Anomalous lead, zinc, and silver in soil samples was found in a
mineralized zone that is concordant with enclosing chert, shale, and
limestone of the late Paleozoic Havallah sequence. The zone is 30-150 m
wide and over 1000 mm long. This property is located in W/2 NE/4
S5,T28N,R40E about 3 krn east of the Mount Tobin Mine. The mode of
occurrence and type of alteration and mineralization suggest that a
volcanogenic massive sulfide deposit may underlie the geochemical anomaly
(Queenstake Resources Ltd. Exploration Report, 15 March 84).
The Eureka Mine is located in S32,T28N,R39E in Miller Basin. The
vorkings, consisting of a small open cut and several adits and other
underground workings, are chiefly in grey limestone of the Triassic
Natchez Pass Formation. Cinnabar occurs in a northeasterly-trending broken
Mount Tobin District - 2

zone in limestone near a contact with argillized Tertiary andesite. Part
of the mineralized zone is filled with dense, brown limonitic gossan
containing cinnabar along fractures (Bailey and others, 1984). The Camera
prospect in S28,T28NSR39E is also in limestone of Natchez Pass Formation.
Sparse cinnabar apparently occurs along a N~O'E, 65'~~ fault zone (Bailey
and others, 1984).
The Hot prospect is located in S25,T27NSR38E. Crystalline cinnabar
occurs in veins of white calcite or barite which cut limestone of the
Triassic Natchez Pass Formation. The cinnabar is accomganiedoby stibnite
and antimony oxides. Mineralization occurs along a N20 E, 85 W fault
(Lawrence, 1963, p. 204; Bailey and others, 1984).
The Needle Peak Mine is located in Sl9,T28N3R40E. Fluorspar occurs in
an irregular, northwest-trending breccia zoner along a fault which
separates Triassic limestone and Tertiary rhyolite tuff (Papke, 1979, p.
62-63); Johnson, 1977, p. 74). The breccia zone is reported to be about
3 m wide. Both the tuff and limestone are silicified; fluorite also occurs
in vugs in the silicified limestone (jasperoid). Halloysite and rare
barite are reported from the altered wallrock (Papke, 1979, p. 63).
Zeolite deposits are present in Tertiary sedimentary rocks exposed on
the west side of Jersey Valley. Papke (1972, p. 21-23) reports that
clinoptilolite, erionite, mordenite, and phillipsite occur in the rocks.
The deposits are the result of authigenic zeolite mineral formation during
diagenesis of volcanic ash beds which were deposited in saline, alkaline
lakes (Papke, 1972, p. 12).
SELECTED REFERENCES
Bailey, E. H. and others (1984) Quicksilver deposits of Nevada:
Unpublished manuscript, Nevada Bureau of Mines and Geology.
Bailey, E. H., and Phoenix, D. A. (1944) Quicksilver deposits of Nevada:
Nevada Bureau of Mines and Geology Bulletin 41.
Burke, D. B. (1974) Stratigraphic and structural controls on the larger
quicksilver deposits in central Nevada: Geological Society of America,
abstracts with programs, v. 6, no. 3, p. 151.
Deffeyes, K. S. (1958) Late Cenozoic sedimentation and tectonic
development in central Nevada: unpublished Ph.D thesis, Princeton
University.
Deffeyes, K. S. (1959) Erionite from Cenozoic tuffaceous sediments,
central Nevada: American Mineralogist, v. 44, p. 501-509.
Johnson, M. G. (1977) Geology and mineral deposits of Pershing County,
Nevada: Nevada Bureau of Mines and Geology Bulletin 89.
Lawrence, E. F. (1963) Antimony deposits of Nevada: Nevada Bureau of Mines
and Geology Bulletin 61.
Papke, K. G. (1972) Erionite and other associated zeolites in Nevada:
Nevada Bureau of Mines and Geology Bulletin 79.
Mount Tobin District - 3

Papke, K. G. (1979) Fluorspar in Nevada: Nevada Bureau of Mines and
Geology Bulletin 93.
Mount Tobin District - 4

LOCATION
MUTTLEBURY DISTRICT
The Muttlebury district is located in T26-27N,R32E in the West
Humboldt Range in Pershing County. It is accessible by a graded county
road from Lovelock.
HISTORY
Gypsum was reportedly the first commodity mined in the district in
1891-93. Gypsum was again mined between 1902-1913. Since that period the
gypsum deposits have been explored by the U.S. Gypsum Co. who owns the
main deposits. The Muttlebury Mine was worked between 1910-1919 and
reportedly produced 40 carloads of silver-lead-antimony ore. Recorded
production from one shipment in 1939 is 331 ounces of silver and 200 lb.
of lead. The district is idle at the present time.
GEOLOGIC SETTING
The bedrock in the district consists of complexly folded and thrust
faulted Triassic and Jurassic, phyllite, shale, limestone, sandstone,
gypsum, and anhydrite, and quartzite. These Mesozoic rocks are overlain
unconformably by sedimentary and volcanic rocks of Tertiary age.
ORE DEPOSITS
Johnson (1977) has described the geology of the gypsum deposits in
the district. The gypsum deposits are of two types; bedded deposits and
gypsite deposits. The bedded deposits are the ones of economic importance.
They occur in thrust slices in the Mesozoic rocks.
The Muttlebury Mine is located on a quartz-calcite vein in a strongly
brecciated zone at the base of a large thrust fault. The vein is in the
lower plate rocks which are composed of shale and limestone. The vein
trends northeasterly and dips 20'-30' southwest. It ranges in thickness
from a few cm to 3/4 m. Lawrence (1963) reports that the ore contains
tetrahedrite, galena, stibnite, sphalerite, and pyrite. The ore examined
during the inspection of the mine contained abundant pyrite, tetrahedrite,
minor sphalerite, and abundant fine-grained stibnite(?). Much of the
stibnite could be jamesonite since no galena was found in the vein
material. Jamesonite could account for both the lead and antimony content
of the ore.
An alaskite sill about 3-4 m thick and containing abundant
disseminated pyrite, intrudes black shale a few meters below the thrust
zone.
GEOCHEMISTRY
Sample results not available yet.
Muttlebury District - 1

SELECTED REFERENCES
Johnson, M. G. (1977) Geology and mineral deposits of Pershing County,
Nevada: Nevada Bureau of Mines and Geology Bulletin 89, p. 115.
Lawrence, E. F. (1963) Antimony deposits of Nevada: Nevada Bureau of Mines
and Geology Bulletin 61.
Muttlebury District - 2

LOCATION
NIGHTINGALE DISTRICT
The Nightingale district encompasses the southern portion of the
Nightingale Range, the northern portion of the Truckee Range, and the
southern portion of the Sahwave Range. Most of the district, including the
main producing mines, is located in Pershing County, but two small
tungsten mines and several prospects are located within adjacent Washoe
County.
HISTORY
According to Bonham (1969) the Nightingale district has been
essentially a producer of tungsten ores although occurrences of uranium,
gold, silver, molybdenum, and copper as well as several different types of
industrial minerals are present in the district.
The tungsten deposits of the Nightingale Mine, the principal producer
in the district, were discovered in 1917 and a small amount of tungsten
ore was produced in 1917-1918. There was little development in the
district until 1929 when the Gold-Silver-Tungsten Co. purchased the
Nightingale Mine. This company built a mill on the property and operated
intermittently through 1939. The mines of the district were extensively
worked during World War I1 (1942-1946) and the Korean War (1952-1955) when
ore was shipped to the Toulon mill. The district has been idle since 1956.
During the 1970'~~ considerable tungsten exploration was done in the area
of the old mines but no additional deposits of any minable size were
found. The district was inactive at the time of our examination.
GEOLOGIC SETTING
The Nightingale district is underlain by Triassic and Jurassic shales
and limestones that have been intruded by Cretaceous granodiorite. All of
the known metallic deposits in the district are related to the
granodiorite and associated intrusive rocks. Tertiary lavas and
pyroclastic rocks and younger basalt flows cover parts of the southern
part of the Nightingale district. The tungsten deposits are in tactites at
and near the contact of granodiorite and limestone. The contact is
irregular in detail although generally concordant with bedding in the
sedimentary rocks (Johnson, 1977).
ORE DEPOSITS
Most of the mining activity in the.Nightingale district has centered
around the Nightingale tungsten mine on the east side of the Nightingale
Range. This deposit is the largest of several that occur along a generally
north-trending contact zone that lies along the eastern flank of the
range. At the Nightingale Mine, scheelite occurs in tactite along a
limestone-granodiorite contact zone. The tactite is mostly quartz,
epidote, and garnet, with substantial amounts of calcite, pyroxene, and
Nightingale District - 1

minor amounts of tremolite, pyrrhotite, molybdenite, chalcopyrite,
arsenopyrite, pyrite, and scheelite (Johnson, 1977). According to Smith
and Guild (1942), the richest specimens of scheelite are associated with
coarse quartz and euhedral epidote crystals. Lenses containing
imperfectly-formed scheelite crystals an inch across have been found at
the mine. The average grade of the Nlghtingale Mine was, however, less
than 0.5% WO (Smith and Guild, 1942). At the Red Hammer prospect, north
of the ~i~ht?n~ale Mine, illsemannite coatings were seen on a
coarsely-crystalline tactite formed in small pendants in granodiorite.
Other tungsten deposlts in the district include the M.G.L. Mine on
the west side of the range in Pershing County and the Crosby Mine on the
south end of the range in Washoe County. The Crosby deposit mineralogy is
somewhat unique for a tactite, argentiferous cosalite, a lead-bismuth
sulfosalt occurs in late-stage quartz veins which cut the tactite body
(Bonham, 1969).
Sulfide-bearing quartz veins have been explored in the Black Warrior
Peak area of Washoe County and a pegmatite occurrence has been prospected
in the Stone House Canyon area of Pershing County, on the northern edge of
the district. The Black Warrior Peak veins contain small amounts of
sulfides, chiefly pyrite, galena, sphalerite, tetrahedrite, and some
stibnite. The Stone House pegmatite contains streaks of black tourmaline
as well as fine-grained sulfides.
Uranium occurrences have been prospected at several locations within
the Nightingale district. At the Four Jacks area, in the northern part of
the district and of the western slope of the Nightingale Range, small pods
of uranophane, autunite, and possibly uraninite occur along shear zones in
shales and siltstones of the Jurassic-Triassic Auld Lang Syne Group. To
the south, in the extreme southern portion of the Nightingale Mountains in
Washoe County, several uranium occurrences are present in Tertiary
volcanic and sedimentary rocks of the Hartford Hill Rhyolite and
Chloropagus Formation (Bonham, 1969).
GEOCHEMICAL RELATIONSHIPS
Ore samples taken from the tactite tungsten deposits within the
district showed considerable variability in geochemistry. All were high in
manganese, reflecting manganese content of garnet from the deposits, and
all had tungsten present. They were all generally low in antimony,
arsenic, and base metals although one sample from a shear zone at the
Crosby Mine was very high in arsenic. This sample was also high in boron
and contained 0.7 ppm gold. Bismuth content of the skarns was quite
variable, ranging from over 1000 ppm at the Nightingale deposits to not
detected at deposits at Jaybird. Some tin was detected in samples from
both the Nightingale and M.G.L. mines. Silver was found to be present in
several of the tactites, and gold was detected in small amounts In samples
from the Nightingale, Crosby, and M.G.L. mines. Anomalous molybdenum was
found in samples from the Alpine Mine and the Crosby Mine.
Samples from the vein deposits in the Washoe County part of the
district were uniformly anomalous in antimony and contained variable but
high silver values. Gold was detected in four of the five samples taken in
this area.
Nightingale DCstrict - 2

SELECTED REFERENCES
Bonham, H. F. (1969) Geology and Mineral Deposits of Washoe and Story
Counties, Nevada: NBMG Bull. 70.
Johnson, M. G. (1977) Geology and Mineral Deposits of Pershing County,
Nevada: NBMG Bull. 89.
Kerr, P. F. (1946) Tungsten Deposits of the United States: GSA Memoir 15.
Lincoln, F. C. (1923) Mining Districts and Mineral Resources of Nevada:
Nevada Newsletter Publishing Co., Reno.
Smith, W. C., and Guild, P. W. (1942) Tungsten Deposits of the Nightingale
District, Pershing County, Nevada: USGS Bull. 936-B.
Stager, H. K. (in prep.) Tungsten Deposits of Nevada: NBMG Bull.
Nightingale District - 3

LOCATION
OPALITE (CORDERO) DISTRICT
The Opalite mining district is located on the north central border of
Humboldt County and extends north into southern Malheur County, Oregon.
The Nevada portion of the district is centered about 15 miles west of the
town of McDermitt near the head of the Quinn River Valley.
HISTORY
The Opalite is mainly a mercury-producing district. Cinnabar was
discovered in 1917 at the Bretz deposit in Oregon, just north of the
Nevada border. The Opalite Mine, which gave the district its name, was
discovered near the Bretz in 1924. These two properties produced mercury
intermittently over the years between 1926 and the late 1960's. The first
discovery in the Nevada portion of the district was made in 1924 by Tomas
Alcorta of McDermitt. This discovery, the Cordero Mine, became the major
producer in the district and, by 1941, was the largest producer of mercury
in Nevada. Between its discovery and the time the district ceased
production in 1970, the Cordero and its smaller neighbors in the Nevada
part of the district produced over 115,000 flasks of mercury (Roper,
1976). Underground mining ceased in the district with the closure of the
Cordero Mine and the dissolution of the Cordero Mining Co. Exploration in
the district continued, however, and in the early 1970'8, Placer Amex,
Inc., announced the discovery of a new, near-surface blanket-like mercury
ore body with reserves of approximately 3,000,000 tons of 10 lb/ton
mercury ore. At the present time this operation, the McDermitt Mine, is
the largest, and only, mercury mine in production in the United States,
and its production will far outweigh any of the older properties in the
Opalite district.
GEOLOGIC SETTING
According to Rytuba (1976), the Opalite district is within the
McDermitt caldera, a volcanic collapse structure of Miocene age which lies
along the Nevada-Oregon border. The collapse structure is oval-shaped with
a diameter of 28 miles in a northerly direction and 22 miles in an
easterly direction. The northern margin of the caldera corresponds to the
southeastern scarp of the Trout Creek mountains in Oregon and the southern
margin of the caldera is defined by the northern, easterly-trending scarp
of the Double H Mountains in Nevada. The eastern caldera margin is
modified by Basin and Range faulting and is projected to extend along the
western side of the Quinn River Valley. The western margin of the caldera
is defined by several coalescing rhyoltte domes that have been emplaced
along a north-striking fault zone. Within the caldera are several arcuate
Fault zones which may define one or more smaller calderas nested within
the larger McDennitt caldera (Rytuba, 1976).
The Tertiary volcanic rocks in the McDermitt area consist of early
Miocene basalt and andeaite flows and late Miocene rhyolite ash-flow tuffs
associated with the UcDermitt caldera. The flows rest unconformably on
Opalite (Cordero) District - 1

granitic rocks of Cretaceous age and range in age from 24 to 18 m.y. After
eruption of the ash-flow tuffs and formation of the caldera, resurgence of
the central portion occurred so that at present the maximum elevation of
the resurgent dome is slightly greater than the caldera rim. Rhyolite
domes were emplaced along the western and northern ring fracture zones,
and tuffaceous lake sediments and rhyolite flows and tuffs were deposited
within the caldera. The last stage of volcanic activity resulted in the
intrusion of rhyolite domes within the central resurgent dome of the
caldera (Rhytuba, 1976).
ORE DEPOSITS
The mercury mines of the Opalite district are in the northern part of
the McDermitt caldera, the Opalite and Bretz mines are adjacent to the
northern ring fracture zone; the Cordero, McDermitt, and Ruja mines are
adjacent to a normal fault that may define a smaller collapse structure
nested within the larger McDermitt caldera. The Bretz, McDermitt, and Ruja
ore bodies occur in lake-bed sediments, those of the Cordero and Ruja
occur in volcanic rocks. Ore bodies in lake beds are generally conformable
to the strata, the ore bodies in volcanic rocks occur along faults.
Cinnabar is the dominant ore mineral in all mines, but at the McDermitt
Mine, corderoite (a mercury chloride) comprises about a third of the ore
(Roper, 1976). Marcasite and pyrite are present in ore bodies in volcanic
rocks while iron oxides predominate in lake-bed ore bodies. Nearly
complete silicification of the lake beds and volcanic rocks has locally
occurred to form a rock termed "opaliten (Yates, 1942). Opalite is
commonly developed along and adjacent to faults, along certain lake-bed
strata, and within conglomerate and talus deposits near the caldera
margins. It is the host for the mercury ore bodies at Opalite and for some
of the ore at Cordero. At the McDermitt Mine, opalite is present near the
ore bodies, but the ore primarily occurs in the unsilicified, argillically
altered sediments.
Other mines associated with the McDermitt caldera and within the
Opalite district include the Moonlight uranium mine on the western side of
the Trout Creek Mountains south of Disaster Peak, and small mercury
prospects to the north of the Moonlight, near the base of Disaster Peak.
The Moonlight deposit and others nearby are associated with rhyolite domes
intruded along the southwestern ring fracture zone of the caldera. The
uranium ore, in the form of pitchblend and autunite, is localized along a
breccia zone that parallels flow foliation planes within the dome. Gangue
minerals are quartz, fluorite, and pyrite (Rytuba, 1976).
The ore deposits of the Opalite district were not visited during this
project. The district is described in detail in Yates (1942), Bailey and
Phoenix (1944), Willden (1964), Roper (1976), and Rytuba (1976). These
works should be consulted for detailed descriptions of the ore deposits.
SELECTED REFERENCES
Bailey, E. H., and Phoenix, D. A. (1944) Quicksilver Deposits of Nevada:
NBMG Bull. 41.
dpalite (Cordero) District - 2
-.

McKee, E. 8. (1976) Origin of the McDermitt Caldera in Nevada and Oregon
and Related Mercury Deposits: AIME Preprint 76-S-83.
Roper, M. W. (1976) Hot Springs Mercury Deposition at McDermitt Mine,
Humboldt County, Nevada: AIME Preprint 76-S-28.
Rytuba, J. J. (1976) Geology and Ore Deposits of the McDermitt Caldera,'
Nevada-Oregon: USGS Open-file Report 76-535.
Willden, R. (1964) Geology and Mineral Deposits of Humboldt County,
Nevada: NBMC; Bull. 59.
Yates, R. G. (1942) Quicksilver Deposits of the Opalite District, Malheur
County, Oregon, and Humboldt County, Nevada: USGS Bull. 931-N.
opalit= (Cordero) District - 3

LOCATIONS
PLACERITES DISTRICT
The Placerites district is located about 41 miles north of Lovelock
and 8 miles south of Scossa on the west side of the Lovelock-Sulphur road.
The gold placers are in an area of low hills northeast of the Seven Trough
Range.
HISTORY
According to Vanderburg (1936) the district was first worked in the
1870's by a character by the name of "Mahogany Jack" and three partners
who took out about $30,000 in gold. From the 1880's to 1928 the district
was worked and prospected by individuals and small groups with marginal
success due largely to a lack of water. The first large scale operation
was assembled in 1929 when the Newmont Placer Mining Co. acquired 4000
acres of placers, built a large reservoir, installed storage tanks, and
brought in a dragline scraper to mine gravel. The operation reached a
daily production of 140 tons of gravel per day for a short period in 1931
(Johnson, 1977). Water shortages continued to plague the operation and
they suspended work shortly thereafter. By 1934 the district was once
again being mined by "snipers" who worked the gulches with dry washers. In
1984-85 the district was being mined on a large scale by a private company
from California and there are reports they too are having water shortage
problems.
GEOLOGIC SETTING AND ORE DEPOSITS
The gold placers are found in a small area of gravel hills north of
Rabbit Hole Creek. Most of the work has been concentrated along the
southern and eastern margins of the hills. The bedrock in the majority of
the placer areas is reported to be metasediments mostly slates and shale.
According to Vanderburg (1936), the gold is coarse and presumably has not
traveled far, although the source is not known. The gold ranges in
fineness from 730 to 900 with total production estimated to be 2,500 oz.
SELECTED REFERENCES
Johnson, M. G. (1977) Geology and Mineral Deposits of Pershing County,
Nevada: NBMG Bull. 89.
Vanderburg, W. 0. (1936) Placer Mining in Nevada: Nevada Univ. Bull. 27.
Placerites District - 1

LOCATION
POTOSI MINING DISTRICT
The Potosi, or Getchell, mining district is located in the northern
Osgood Range, Humboldt County. Most of the mines of the district are on
the eastern flank of the range, about 30 miles northeast of the town of
Winnemucca. The Pinson gold mine is on the southeast side of the dis-
trict, near the mouth of Granite Creek. The Getchell gold deposit is
about 8 miles to the north. Several tungsten deposits were mined at
locations along the east flank of the range and at locations along the
crest of the range.
HISTORY
The northern Osgood Range was first prospected in the late 1800's
for precious metals. The recorded discovery was in 1874 when deposits of
silver, lead, and antimony were found on the Louisa claim on the north-
west side of the range. The district was first named Crystal in reference
to plentiful, large quartz crystals found at the original discovery site.
This same area later became the Richmond tungsten property, and crystals
may still be found there in cavities in a massive garnet tactite.
By 1878, the district name had been changed to Potosi but there was
little recorded activity until 1899 when a copper strike on Granite Creek
in the southern part of the range received attention. The copper occur-
rences, never important, were in a granite contact zone later mined for
tungsten as the Granite Creek Mine and are just north of the present
Pinson open pit gold mine. In 1915, molybdenum was discovered in the
district with ore containing "18% moly" being reported from the Jacks
Mine. No molybdenum production was recorded, the occurrence was probably
at the location of the Moly-Tonopah tungsten mine.
Tungsten was discovered in the Osgood Range in 1916, the first
claims were recorded at Granite Creek and the distrlct was actively
prospected through about 1919. No tungsten production was recorded from
the district, however, until 1942 when wartime demand improved the
tungsten price. The major periods of tungsten production were from
1942-1945, and from 1950-1957. Production of tungsten totaled about 2
million units of W03 and Getchell ranks third in tungsten production for
Nevada.
The Getchell gold deposit was discovered in 1933 and began produc-
tion in 1938, one of the three earliest disseminated gold deposits to be
exploited in Nevada. Although plagued with metallurgical difficulties
almost from the beginning, Getchell produced over $25 million in gold up
to 1967 when the mine closed. The Pinson gold deposit was discovered in
the southern part of the district in the early 1970'8 and is now in
production. Exploration continues in the district for gold and other
similar gold deposits are likely to be found within the Potosi district.
Potosi Mining District - 1

GEOLOGIC SETTING
The heart of the Osgood Range is mainly composed of sedimentary
rocks of the Cambrian Preble Formation which have been intruded by the
Osgood granodiorite stock. In outcrop pattern, the granodiorite forms an
hour-glass configuration along the eastern slope of the range crest,
while the sedimentary units form the actual range crest and wrap around
the steeper portions of the north, east, and south flanks of the range.
In this area, the Preble formation is composed of a lower, phyllitic
shale section, a middle limestone-rich section, and an upper carbonaceous
shale and quartzite section. These rocks have been folded into a series
of tight isoclinal folds, overturned to the west, whose axes now strike
generally north-northeast and dip steeply to the east. The structure of
the Preble Formation in the Osgood Range is very complex, and it is not
known exactly where within the Preble section these rocks can be placed.
The presence of numerous sections of limestone along the eastern margin
of the range suggest that these rocks correlate with the middle Preble
unit, and the thick shale (now hornfels) section exposed on the north,
west, and southern portions of the range may correlate with the lower,
shaly portion of the Preble.
The contact of the Osgood stock with the sedimentary section
generally parallels the strike and dip of the intruded formations along
its eastern side. The stock is a medium-grained, biotite granodiorite and
has been dated as Cretaceous age (90 my). In general, the intrusive shows
a lack of late-stage diking, but some aplite and dacite dikes are present
locally. The granodiorite stock has a conspicuous metamorphic aureole, as
much as 10,000 feet wide, within which Preble shales have been trans-
formed to hornfels and limestones transformed to marble, light-silicate
rock, and dark tactite.
The most distinctive structural feature of the Osgood range is the
Getchell fault and its related, parallel fault zones. The Getchell fault
system is a northerly striking basin and range type structure along the
eastern flank of the Osgood Range. This steeply-dipping fault zone is
traceable from Granite Creek on the south end of the range to at least
two miles north of Getchell Camp. Berger and Taylor (1974) concluded that
the displacement on the Getchell fault has been predominately vertical
since the Cretaceous, and that the fault system controlled the emplace-
ment of the granodiorite stock and related dikes. The fault zone is up to
several hundred feet wide at points along its strike and it cuts both
sedimentary units and the Osgood stock. At the Getchell Mine where gold
mineralization is spacially associated with it, the fault has a definite
footwall strand, a central zone, and an eastern, hanging-wall structure.
All of these structures dip 45 degrees to 55 degrees to the east, with
the eastern structures tending to have steeper dips.
ORE DEPOSITS
Two types of metallic deposits have been mined in the Potosi mining
district. Tungsten-bearing skarns occur along the margin of the Osgood
stock and disseminated gold ores occur in the Getchell fault system.
Although there has been production from both types, the gold ores have
accounted for the larger part of the value. In addition to metals, barite
Potosi Mining District - 2

has been mined from two localities in the range, one north of Anderson
Canyon on the north end of the range, and one near the mouth of Hogshead
Canyon on the southeast side of the range.
The tungsten-bearing skarn, or tactite, deposits occur around the
margin of the Osgood stock where it is in contact with limestone units of
the Preble Formation. On the east side of the stock, the contact with the
sedimentary rocks dips about 40 degrees to 60 degrees to the east,
roughly conformable to the bedding. On the west side the contact is
near-vertical and in large part cuts across bedding. The tactite ores
consist of scheelite in a gangue of garnet, diopside, quartz, and
calcite. Minor amounts of chalcopyrite, pyrite, molybdenite, phyrrotite,
galena, and pyrite occur with some ores. Silver occurs with the galena
and the tactite body in Anderson Canyon (Richmond tungsten mine) was
first prospected in 1874 for silver. Larger tactite masses appear to be
localized by irregularities in the contact, particularly by projections
of limestone into granodiorite, and the main granodiorite stock usually
forms one wall of each of the ore bodies that have been mined. The ore
mined ranged from about 0.3% to a little over 1% W03, and averaged
between 0.5 and 0.6X W03. The major tungsten mines were the Riley and
Richmond mines operated by Union Carbide Corporation, the Granite Creek,
Tip Tip, Pacific, Valley View, Kirby, Marcus, Riley Extension, Tonopah,
and Alpine mines operated by Getchell Mines, Inc.
The gold deposits of the Potosi district are epithermal-replacement
deposits which are localized along the Getchell fault system and related
structures. The ore zones occur most frequently in interbedded limestones
and shales. The ore zones are irregular pods that are essentially
confined to fault zones and are usually long, narrow features. At the
Getchell Mine, mineralization is known to extend at least 3000 feet
down-dip on the main structure. To date, commercial deposits have been
found at three localities along the fault trend (Getchell Mine, Section 4
Pit, and Pinson Mine), and the gold ores at these deposits are typical of
other disseminated gold occurrences in Nevada. The gold occurs as micron-
to submicron-size particles associated with arsenic, antimony, and
mercury minerals. Gold mineralization is found at numerous other
localities along the Getchell structure and other deposits may be found
as exploration continues in the district.
Barite occurs in two localities in the Potosi district. At the head
of Anderson Canyon, on the north end of the range, bedded barite has been
mined from lenticular units occurring in the Cambrian Preble Formation.
At the Redhouse deposit, near the mouth of Hogshead Canyon on the south
end of the range, a flat-lying barite body has been mined from part of
the Ordovician Comus Formation (Papke, 1984).
Other mineral deposits in the Potosi district include the Bluebell
copper prospect south of Granite Creek in the main Osgood Range, and
small manganese and silver prospects in the Dry Hills to the northeast of
the Osgood Range. None of these have recorded production. The prospects
in the Dry Hills are interesting in that they may be related to a center
of mineralization other than the 0sgood.stock.
GEOCHEMICAL RELATIONSHIPS
The geochemical relationships withfn the disseminated gold ores in
the district are vell documented in Erickson, 1964, and Berger, 1975. In
Potosi Mining Distrfct - 3

summary, gold in the ores occurs in association with highly anomalous
arsenic, mercury, and anomalous antimony. Base metals are generally low,
but tungsten is locally anomalous. Fluorite is associated with gold in
some areas of the Getchell deposit. Arsenic is present in the Getchell
ores up to several percent. At the Pinson gold mine, arsenic is present
but is in the range of a geochemical anomaly rather than as a major
component of the ore.
Samples of the tactite ores taken during this study were high in
manganese, tungsten, molybdenum, and tin. Copper, lead, and zinc were
locally high. Bismuth values were generally low contrasting with other
skarn tungsten ores in Nevada which are commonly high in bismuth.
SELECTED REFERENCES
Berger, B.R. (1975) Geology and Geochemistry of the Getchell Disseminated
Gold deposit, Humboldt County, Nevada: SME Preprint No. 75-1-305.
Berger, B.R., and Taylor, B.E. (1974) Pre-Cenozoic age for "Basin and
Range" faulting, Osgood Mountains, North-Central Nevada: abstract, GSA
Cordilleran section, Las Vegas, Nevada.
Erickson, R.L., Marranzino, A.P., Uteana, O., and Janes, W.W. (1964)
Geochemical Exploration near the Getchell Mine, Humboldt County,
Nevada: USGS Bull. 1198-A.
Hobbs, S.W., and Clabaugh, S.E. (1946) Tungsten Deposits of the Osgood
Range, Humboldt County, Nevada: NBMG Bull. 44.
Hotz, P.E., and Wilden, R. (1964) Geology and Mineral Deposits of the
Osgood Mountains quadrangle, Humboldt County, Nevada: USGS Prof Paper
431.
Joralemon, P. (1951) the Occurrence of Gold at the Getchell Mine, Nevada:
Econ. Geology, v. 46, p. 267-310.
Papke, K.G. (1984) Barite in Nevada: NBMG Bull. 98.
Silberman, M.L., Berger, B.R., and Koski, R.A. (1974) K-Ar age relations
of granodiorite emplacement and tungsten and gold mineralization near
the Getchell Mine, Humboldt County, Nevada: Econ. Geol., v. 69, no. 5,
p. 646-656.
Stager, H.K. (in prep.) Tungsten Deposits of Nevada: NBMG Bull.
Potosi Mining DLstrict - 4

LOCATION
POVERTY PEAK DISTRICT
The Poverty Peak district is located in the north and northwest
portions of the Hot Springs Range. The "town" of Paradise Valley lies
approximately 10 miles to the northwest. All of the district is on
the Hot Springs Peak 15 minute topographic map.
HISTORY
According to Bailey and Phoenix the district was discovered in
1936. It is predominantly a quicksilver district but some manganese
has also been produced. According to Rytuba nine mercury mines and
prospects are recognized in the district plus two manganese "mines".
The district is credited with a production of about 1,900 flasks of
mercury, most of which came from one mine, the Cahill. It is not
known how much manganese has been produced, records indicate only a
few "cars" being shipped.
GEOLOGIC SETTING
All the mines are located along a northeast-trending ridge of
rocks which is composed of Pennsylvanian-Permian Havallah(?) and
Pumpernickel(?) Formations. The sediments are steeply inclined with a
dominant northwestward dip and are locally silicified and cut by
numerous quartz and calcite veins. The deposits occur in interbedded
limestone, dolomite, and quartzite. The ore is usually high-grade and
consists of stockworks of cinnabar, quartz, and (or) calcite veins.
In the richest ore, cinnabar forms massive replacement bodies in the
carbonates. The manganese is localized in chert beds and occurs as
undetermined oxide minerals both in masses and as disseminations
through chert layers.
ORE DEPOSITS
The Cahill Mine is by far the largest producer in the district.
Recorded production amounts to 1,738 flasks of mercury. The mine
consists of 9 claims and Fractions thereof and lies at the southern
edge of the district. Initial development was done by J. Cahill. A
10-ton Gould rotary furnace was installed in 1939, from which was
produced 490 flasks in 1940. From 1941-until 1971 the mine was leased
to a number of individuals and companies, some of which produced a
few hundred flasks and some virtually nothing. In recent years a
small amount of cinnabar has been mined For its crystalline quality.
This material is used for medicinal purposes in the Orient.
Poverty Peak District - 1

The mine includes several thousand feet of underground openings
developed on six levels and several large open cuts. The six adits on
the property are open. A fairly continuous ore body was stoped upward
100 feet from below the main haulage level. Because the 40-foot width
stope was relatively flat, its pitch length was nearly 200 feet.
Cinnabar was localized beneath a narrow gouge zone lying along a
fault which for the most part is parallel to beds of limy quartzite
and recrystallized sandy dolomite. Displacement along the fault
appears small. The plan of the fault is arcuate, and ore bodies were
localized where it rolls in strike towards the footwall forming an
"inverted trough". The ore in part occurred as a stockwork of nearly
pure cinnabar veinlets, with some quartz, filling openings along, and
close beneath, the fault; but the richest ore occurred as pods
resulting from replacement of highly fractured silicified dolomite
and extended several feet into the footwall. Locally, minor
quantities of stibnite accompany the ore.
The visit to the mine during the currant study showed the
remains of five wood cabins, none of which have been used for sometime;
and remains of the furnace room. The furnace was still there.
It is approximately 3 feet in diameter and about 25 feet long. None
of the supporting equipment was present. The power lines are up and
appear in good condition. There has been no mining activity here for
at least two years. Sample 2450 was collected from a high-grade pile
and picture 88 was taken looking at the furnace room and old camp.
The Hapgood Mine is located on the west slope of Hot Springs
Peak approximately 1/2 mile east-northeast of the Cahill Mine.
Recorded production is 127 flasks of mercury.
The property was first worked in 1936 by T. C. Hapgood. From
1941 through the early 1970's the property was leased and worked by a
number of individuals and one small company. Since the early 1970's
there has been no work, or production, from this property.
The principal working is a haulage level which, with its two
branches, totals about 500 feet. A mineralized fault, cut about 120
feet from the portal, has been followed below the haulage level to a
depth of 34 feet and above this level to the surface, a distance of
75 feet. An adit 30 feet below the haulage level intersects the ore
zone. A shelf on the south end of the property is caved and severed
trenches are present on the north end of the property.
The rocks consist of 0.5- to 2-foot beds of sandy limegtone with
thin interbeds of shale. They strike ~45'~ and dip about 45 NW.
Cinnabar occurs along several closely spaced parallel bedding plane
shears as veinlets, and locally forms isolated bunches in the
limestone away from the shears. Associated minerals include calcite,
quartz, gypsum, and clay. Sample 2451 collected here.
The Conchita Mine (originally Turillas) adjoins the Cahill Mine
on its south edge and consists of seven claims and fractions. It was
initially developed in 1940 by F. Turillas, with development
consisting of four shallow trenches located on a mineralized zone
about 100 feet long and 20 feet wide. Two adits intersected the ore
zone at a depth of 75 feet.
Poverty Peak District - 2

In 1954 Sonoma Mines, Inc. acquired the property and discovered
a small amount of ore in an open cut. Development consisted of two
large open cuts, each following a gently dipping fault zone in
steeply dipping silicified limestone, quartzite and phyllite. The
sediments are cut by a stockwork of calcite and quartz veins.
Cinnabar occurs on fractures, as isolated crystals, and as
disseminations in the brecciated fault zone. Some good ore has also
been found filling cross fractures. Reported production amounts to 21
flasks of mercury. Sample 2452 was collected here.
The Wholely quicksilver mine lies about 0.6 miles north of the
Cahill. This claim group adjoins the Conchita claims to the south and
the Rapgood claims to the east. The property was discovered in 1938
and in 1941 a 4-pipe retort was installed and 14 flasks of mercury
recovered. This is the only production credited to the property.
Development consists of an adit driven from the retort site, which
extends southward 160 feet, and irregular workings containing a small
stope which extends upward to an overlying open cut. The "north"
workings consist of an adit, still open, and branching drifts
totaling about 430 feet.
The cinnabar occurs as veinlets and crystals along bedding
faults that strike northerly and dip to the west in the surface
workings. Sample 2453 collected here. See prospect sheet data.
Abundant copper oxides on dumps of shafts. No mention is made of this
in any previous write-ups.
The Prentiss property lies on the west slope af Hot Springs Peak
a little less than 0.9 miles north of the Cahill Mne. It was
discovered in 1940 by C. R. Prentiss. It is developed by several
trenches and two shafts which are presently caved.
Cinnabar forms crystalline veinlets with calcite and some
quartz, and occurs as isolated crystals in limestone and calcareouso
quartzite. The best ore was found along bedding shears striking NlO W
and dipping steeply eastward. Opalite fragments occur in the mine
dump but no cinnabar was observed associated with them. No production
is credited to the property.
The Snowdrift property was originally developed on the northeast
slope of Rot Springs Peak with the driving of a 73-foot adit. This
during 1940. N. H. Getchell leased the property sometime in 1940 and
built a road up to it. More recent work, date not known, includes
trenching along the access road which exposed additional ore.
Cinnabar occurs in calcite and quartz veins which cut sandy limestone
and shale which strikes northeasterly and dips 45'~~. Two adits, one
30 feet long, the other 120 feet long are developed on the west side
of Hot Springs Peak, just below the summit. The property is credited
with no production.
There are numerous other prospect pits and trenches scattered
throughout this district, all of which were not visited. It is
thought, however, that any property that had any significant
production was visited.
Poverty Peak District - 3

SELECTED REFERENCES
Bailey, E.H., Rytuba, J.J., and Jones, R.B. Unpublished data on
Nevada's quicksilver districts: Incomplete set of data at offices
of Nevada Bureau of Mines and Geology.
Bailey, E.H. and Phoenix, D.A. (1944) Quicksilver deposits in Nevada:
NBMG Bull. 41, p. 101-106.
Willden, R. (1964) Geology and mineral deposits of Humboldt County,
Nevada: NBMG Bull. 59, 154 p.
Poverty Peak District - 4

LOCATION
RABBIT HOLE DISTRICT
The Rabbit Hole district is on the west side of the Kamma Mountains
at the northern edge of Pershing County. The center of the district is
about 8 miles south of Sulphur on the Lovelock-Sulphur road.
HI STORY
There are numerous accounts of the emigrants stopping at Rabbit Hole
Springs to replenish their water supplies before crossing the Black Rock
Desert to the west. According to Paher (1970) some of these travelers
investigated the gold placer deposits as early as the 1850's but did not
mine them. Placers were reportedly worked for the first time by the
chinese in the 1870's who recovered several thousand in gold (Vanderburg
1936, p. 154). Active mining started around 1911 but was intermittent
until the 1830's (Johnson, 1977). From 1933-1942 the placers were worked
continuously by hundreds of individuals using drywashers and by companies
with dry concentrators and heavy equipment. By 1939 the Rio Seco Mining
Co. was treating several hundred yards of gravel per day. Production of
over 3000 oz/gold was reported for 1939 alone but no complete official
records were possible with so many individuals included. Active placer
mining was being conducted as late as 1984. Some lode claims were staked
as early as the 1940's in the vicinity of Rabbit Hole Spring in Sec. 8,
T33N,R29E. This portion of the district is underlain by metasediments and
cut by quartz veins. The area is scarred by numerous dozer-cuts attempting
to expose and explore the vein systems. Several small mines and prospects
are also present in the same area but there is no record of any production.
GEOLOGIC SETTING
The main part of the district covers a basin of Tertiary sediments
lying to the west of the Kamma Mountains. A small part of the district is
along the flanks of the range while the southern boundary includes
outcrops of metasediments of Triassic and Jurassic age. The metasediments
are covered by a thick sequence of gravels and sediments of volcanic
origin.
ORE DEPOSITS
The major gold placer deposits are in a large alluvial fan that
extends westward from the flanks of the Kamma Range. Johnson (1977)
relates a complex depositional history for the fan and describes placer
gravels overlying a clay horizon that serves as a false bedrock underlying
the entire placer area. This false bedrock forms a horizon separating the
overlying gold-bearing gravels from the barren gravels beneath. The major
placering activity was reported to be in gullies and canyons that disected.
the fan, with the richest pay zones occurring near the head of the
canyons. The gold was almost always found as flat nuggets and was commonly
Rabbit Hole DLstrict - 1

associated with trace amounts of cinnabar, cassiterite and scheelite. On
occasion, magnetite with up to 5% Ti0 was also present and caused
difficulties by clogging the riffles (Beal, 1963).
SELECTED REFERENCES
Beal, L. H. (1963) Investigations of Titanium occurrences in Nevada:
NBMG Report 3.
Johnson, M. G. (1977) Geology and Mineral Deposits of Pershing County,
Nevada: NBMG Bull. 89.
Paher, S. W. (1970) Nevada Ghost Town and Mining Camps: Howell-North, San
Diego.
Vanderburg, W. 0. (1936) Placer mining in Nevada: NBMG Bull. 27.
Rabbit Hole District - 2

LOCATION
RAGGED TOP DISTRICT
The Ragged Top district is located in the southern Trinity Range in
the vicinity of Ragged Top Mountain. Most of the district is in southern
Pershing County but mines along the county border in northern Churchill
County are also included in this district. The area along the county
border is sometimes included in a separate district, Copper Valley. The
principal mines in the Ragged Top district are the Ragged Top tungsten
mine northwest of Ragged Top Mountain in Section 12,T25NJR28E, and the
Copper King tungsten-copper mine east of Copper Valley on the
Pershing-Churchill County line in Section 28,T25NSR28E.
HISTORY
Field evidence indicates that the southern portion of this district
(the Copper Valley area) was being prospected in the late 1800's but the
first record of claims in the area is in 1906-1908 when L. A. Freidman and
Jesse Knight located the Copper King claims. The Copper King outcrop is
highly stained with copper minerals, and this first work was, no doubt,
for copper and silver. There is evidence that a small amount of ore was
shipped from the Copper King, but no record of production exists.
In late 1915, scheelite was discovered in a tactite occurrence on the
Ragged Top claims located on the west side of the Trinity Range a few
miles north of the Copper King area. The Ragged Top claims were developed
for tungsten by the Chicago-Nevada Tungsten Co., a mill was built at
Toulon, and an estimated 12,000 to 20,000 tons of 1 percent WOj was mined
up through the end of World War I (Johnson, 1977). No additional tungsten
production is recorded for the district until the 1952-1956 period when
small quantities of ore were produced. During this same time period,
Cordero Mining Co. produced about 614 units of WO from the old Copper
King claims to the south. There has been continued exploration for both
tungsten and copper in both the Ragged Top and Copper King portions of the
Ragged Top district during the late 1960's through the early 1980's but
the results have been generally dissappointing. There was no activity in
the district at the time of our examination.
GEOLOGIC SETTING
Most of the Ragged Top district is underlain by Tertiary volcanic
rocks and Triassic and Jurassic metasedimentary rocks. Several bodies of
granodiorite intrude the metasedimentary rocks in the western and southern
parts of the district. Masses of limestone occur along the western flank
of the range and where this limestone has been intrudedand surrounded by
granodiorite layers of tactite occur at the contact between the two rock
units. The present outcrop pattern is that of metamorphosed sedimentary
rocks and intrusives forming a gently sloping, moderately disected
pediment skirt around the western and southern flanks of the more rugged
volcanic mountain range.
Ragged Top District - 1

ORE DEPOSITS
At the Ragged Top Mine, on the northwest side of the district, layers
of tactite, in places 50 feet wide and hundreds of feet long, occur along
the limestone-granodiorite contact. The tactite contains brown garnet,
epidote, calcite, quartz, and scheelite. The tungsten content of the ore
shipped from the Ragged Top Mine averaged about 1 percent WO (Stager, in
3
prep.). Many of the tactite outcrops in the pediment to the northwest of
the mine, while bold in outcrop, have the appearance of shallow-rooted
pendants and probably do not have much depth potential.
At the Copper King property to the south, scheelite mineralization
with some copper occurs in a steeply-dipping, east-west trending tactite
lense which occurs on the east side of a granodiorite mass. Here, the
granodiorite underlies the pediment to the west. The tactite occurrence at
Copper King resembles those at Ragged Top but, at Copper King, drill data
has confirmed that the scheelite-bearing tactite lense extends as much as
1000 feet below outcrop. Exploration work on this deposit has indicated
that some 200,000 units of WO could be present in the tactite zone but,
under current mining costs an3 tungsten market conditions, the deposit is
not commercial.
GEOCHEMICAL RELATIONSHIPS
Ore samples from both the Ragged Top and Copper King mines were very
similar in geochemical analysis; tungsten and low molybdenum values in
association with high manganese, moderate to high copper, low zinc,
essentially no lead or bismuth, and trace amounts of silver. Low but
slightly anomalous tin was found to be present at the Ragged Top Mine but
not the Copper King. The Coon Can tungsten property, sometimes included in
the nearby Toy district, displayed geochemical relationships similar to
those seen in the Ragged Top ores. Analysis from ores collected at the
Copper Queen and Hard-To-Find mines, located on the southern border of the
district in Churchill County (sometimes included in the Jessup district),
show geochemical values almost identical to the Ragged Top ores. The
Hard-To-Find ore contained higher silver values, however.
SELECTED REFERENCES
Johnson, M. G. (1977) Geology and Mineral Deposits of Pershing County,
Nevada: NBMG Bull. 89.
Lincoln, F. C. (1923) Mining Districts and Mineral Resources of Nevada:
Nevada Newsletter Publishing Co., Reno.
-.
Stager, H. K. (in prep.) Tungsten Deposits of Nevada: NBMG Bull.
Ragged Top District - 2

Vanderburg, W. 0. (1936) Reconnaissance of Mining Districts in Pershing
County, Nevada: USBM IC 6902.
Willden, R., and Speed, R. C. (1974) Geology and Mineral Deposits of
Churchill County, Nevada: NBMG Bull. 83.
Ragged Top District - 3

LOCATION
REBEL CREEK DISTRICT
The Rebel Creek or New Goldfields mining district is located on the
west slope of the northern Santa Rosa Range in northern Humboldt County.
Mines and prospects are concentrated in the area between Rebel Creek on
the south and Willow Creek on the north. The major property, the Ohio, is
located in Section 32, TUN, R36E, on the ridge separating Willow and
Eagle Creeks. Other small prospects to the south in Horse Canyon and on
the east side of the range on Solid Silver Creek are also included within
the Rebel Creek district.
HISTORY
Lindgren (1915) reports that the Ohio claim was being worked in
1884. Couch and Carpenter (1943) show production from the Rebel Creek
district for 1875, 1880, 1883-1886, and 1893, but there is no mention of
where in the district this production originated. Total amount for the
years listed is $69,333 in gold and silver. Exploration work was being
done in the district in 1907 and a small mill was built in 1908 (Lincoln,
1923). The last mention of activity describes prospecting on Rebel Creek
in 1911 (Lindgren, 1915). The Ohio mine shows evidence of work in the
1930's and more recently the area around the mine has been drilled. There
is, however, no record of this activity. At the time of our examination
(September 1984) no work was underway in the district.
GEOLOGIC SETTING
Most of the Santa Rosa Range in the vicinity of Rebel Creek district
is underlain by a very thick sequence of Upper Triassic (and in part
Jurassic?) shales and sandstones that were tightly folded and
metamorphosed to phyllites and quartzites prior to Late Cretaceous, or
possibly early Tertiary time. These rocks were then intruded by a number
of granitic stocks which produced broad thermal aureoles and, locally,
small ore deposits (Compton, 1960). The sedimentary section has been
repeated many times by isoclinal folding. The oldest rocks in the section
are dark-gray to black phyllites and light-gray quartzites that crop out
in the cores of anticlines. The granitic rocks which intruded the
sequence in Late Cretaceous or early Tertiary time are dominantly
granodlorite which locally grades into tonalite. Contact metamorphic
aureoles that surround the stocks average between one half mile to one
mile in width.
ORE DEPOSITS
All of th= mines and prospects examined in the Rebel Creek district
have been developed on sulfide-bearing, massive white quartz veins which
follow cleavage planes and foliation in metamorphic rocks. The vein
132
Rebel Creek District -1

quartz is commonly crushed and occurs as pods and lenticular masses along
shear zones which follow wall rock foliation. In some prospects,
brecciated vein material shows cementing by later clear quartz and
pyrite. Veins commonly strike northeast but the vein at the Ohio has a
northwest strike. Pyrite is the most common sulfide present and most
veins have iron-stained outcrops due to oxidized pyrite. At the Ohio
mine, native silver, malachite, chalcocite, and iron oxides were seen in
oxidized vein material and tetrahedrite, galena, sphalerite, and pyrite
were found in fresh vein fragments.
GEOCHEMICAL RELATIONSHIPS
All of the samples taken in this district contained detectable gold,
and silver values ranged from about 1 ppm up to 700 ppm (about 20 oz).
The Solid Silver property, on the east side of the range, reported low
arsenic and antimony, moderate to high lead, copper, and zinc, and
anomalous cadmium and tin. The mines on the west, however, in the center
of the district, generally reported high arsenic, antimony, and lead,
moderate copper, low zinc, and not cadmium or tin. The Solid Silver mine
is located within the contact aureole of the main Santa Rosa stock while
the mines in the Willow Creek area are beyond the mapped boundaries of
metamorphic effects (see Compton, 1960, P1. 1). The differences in ore
geochemistry may. reflect the location of the mines in relation to the
granodiorite stock.
SELECTED REFERENCES
Carpenter, J.A. (1934) Report on the Ohio Mine in the Rebel Creek Mining
district, Humboldt County, Nevada: unpub. report, NBMG files.
Compton, R.R. (1960) Contact Metamorphism in Santa Rosa Range, Nevada:
GSA Bull., vol. 71, pp. 1383-1416.
Couch, B.F., and Carpenter, J.A. (1943) Nevada's Metal and Mineral
Production: NBMG Bull. 38.
Lincoln, F.C. (1923) Mining Districts and Mineral Resources of Nevada:
Nevada Newsletter Publishing Co.
Lindgren, W. (1915) Geology and Mineral Deposits of the National Mining
District, Nevada: USGS Bull. 922-5.
Willden, R. (1964) Geology and Mineral Deposits of Humboldt County,
Nevada: NBMG Bull. 59.
Rebel Creek District -2

LOCATION
RED BUTTE DISTRICT
The Red Butte district lies about 17 air miles northwest of Jungo, a
railroad siding on the Western Pacific Railroad, on the west flank of the
southern part of the Jackson Mountains. All the mines and prospects in the
district can be located on the King Lear 15 minute topographic map.
HISTORY
According to Ransome and Vanderburg the area was first prospected for
gold in 1907. Subsequent exploration vas confined to copper and latter,
post World War 11, to antimony. One known cinnabar occurrence is located
in the southwest corner of the district. Total production through the mid
1930's consisted of three carloads of copperlead ore, one carload of
lead-zinc-silver ore and about 20 tons of antimony ore. Most of these ores
were shipped during World War I. In the very early 1940's a few flasks of
quicksilver were produced. Since World War I1 activity in the district has
been very minimal with the most interest probably shown in the early to
mid 1960's when the price of antimony was at an all time high. Production
from this activity is not known but judging from the workings it was very
little to none. There is no current activity in the district although a
large block of claims is being held by Terry and Howard Harris of
Winnemucca .
GEOLOGIC SETTING
Extending through the center of the district, or slightly east of
center, Willden has mapped an un-named and undivided sequence of Tertiary
volcanic rocks. Within the Red Butte district this unit is dominantly
andesite. Lying along the west margin of the district, and to a lesser
extent along the east margin is alternating sections of the Permian Happy
Creek volcanic series and the Cretaceous King Lear Formation. The Happy
Creek series is composed of massive aphanitic or porphyritic volcanic
flows and flow breccias, agglomerates, tuffs, and, at a few localities,
graywacke and volcanic-debris sandstone. The composition of the volcanic
rocks ranges from andesite to basalt, but andesite is by far the most
abundant. The detrital rocks, consisting mainly of volcanic fragments,
occur in the southern Jackson Mountains east of the Jungo-Post Creek road.
The King Lear Formation everywhere rests on volcanic rocks assigned
to the Happy Creek group, except on the south side of Rattlesnake Canyon
at the west front of the Jackson Mountains. Here, the formation overlies
gray thick-bedded limestone mapped, by Willden, as part of the undivided
volcanic and sedimentary formation of Permian and Triassic age. The King
Lear Formation is composed of about equal amounts of dark-green and
greenish-brovn pebble to boulder conglomerate and green to red siltstone,
smaller amounts of green to greenish-gray or brown graywacke, and
occasional beds of light to dark-gray dense finely crystalline limestone.
The formation is thought to be middle Early Cretaceous age.
Red Butte District - 1

In the south-southwest portion of the district is a small wedge of
Tertiary volcanic and sedimentary rocks undivided.
Tertiary-Cretaceous age granodiorites and diorites occur in the
northeast and northwest portions of the district. Associated with these
Lntrusives are a series of aplite dikes and in places the diorite grades
into gabbro.
ORE DEPOSITS
Ore deposits in the district are copper-antimony and one known
mercury occurrence. The copper deposits occur in association with aplitic
dikes as veins and disseminations and, at one prospect, in a fissure zone
in gabbro. Mineralization consists of cuprite, covellite, native copper,
chalcocite, chrysocolla, azurite, and malachite. Gangue minerals include
hematite, limonite, and minor barite. Antimony occurs in quartz veins
associated with diorite and andesite. Ore minerals are antimony oxides at
the surface and stibnite at depth. The cinnabar occurrence is associated
with andesite, diorite and limestone, where it occurs as fillings in
fractures, disseminated in shear zones and as rounded "strawberries" in
open cracks. Associated minerals include pyrite, hematite, calcite,
dolomite, various clays, and several copper minerals.
SELECTED REFERENCES
Bailey, E. H., and Phoenix, D. A. (1944) Quicksilver deposits in Nevada:
NBMG Bull. 41, p. 106-107.
Lawrence, E. F. (1963) Antimony deposits of Nevada: NBMG Bull. 61, p.
87-88.
Lincoln, F. C. (1923) Mining districts and mineral resources of Nevada:
Reprint Edition 1970, Douglas McDonald, Pub., p. 102.
Vanderburg, W. 0. (1938) Reconnaissance of mining districts in Humboldt
County, Nevada: U.S. Bur. Min. I.C. 6995, p. 41-42.
Willden, R. (1964) Geology and mineral deposits of Humboldt County,
Nevada: NBMG Bull. 59, 154 p.
Red Butte District - 2

LOCATION
ROCHESTER DISTRICT
The Rochester district is located in the southern part of the
Humboldt Range in T28NDR33 and 34E. It is accessible via Nevada State
Highway 400 and several dirt roads.
HISTORY
The main mines in the Rochester district were not discovered until
1912, but several small gold mines were located in the area in the period
from 1860-1880. Prospects were located on Nenzel Eill in the district in
1905, but no ore was produced until 1912 when a small shipment of silver
ore from the prospects started a rush to the district. As a result of the
rush, numerous mines were opened in the district on Nenzel, Lincoln,
Packard, and Independence Bills. The main Rochester mines were located on
Nenzel Hill.
The main Rochester mines were worked continuously from 1913-1929, the
Nevada Packard Mine from 1913 to 1923. Other mines in the district,
including the Lincoln Hill, Looney and the Buck and Charley have been
worked intermittently from 1913 to the 1970's.
The Rochester district has produced over 78,000 ounces of gold and
nearly 9 million ounces of silver, together with subordinate production of
copper, lead, and zinc. In recent years an intensive exploration program
centered on Nenzel Hill and conducted by ASARCO and Coeur d'Alene mines
has resulted in the delineation of 112 million tons averaging 0.007 ounces
of gold and 1.5 ounces of silver per ton.
In addition, a heap leach operation for silver and minor gold was
conducted at the Nevada Packard Mine in the early 1980's. The property is
currently idle.
GEOLOGIC SETTING
The main rocks exposed in the Rochester district are a complete
sequence of the units of the Koipato Group of Triassic age, Limerick
Greenstone, Rochester Rhyolite, Weaver Rhyolite, intrusive rhyolite
porphyry and leucogranite. The Koipato Group is overlain unconfomably by
clastic and carbonate rocks of the Lower and Middle Triassic Prida
Formation in the western part of the district. The Mesozoic rocks are
unconfomably overlain by Tertiary basalt flows and by Quaternary alluvial
deposits. The Mesozoic rocks are folded into a broad, complexly faulted
anticline. The anticline and most of the faults trend northerly.
.
ORE DEPOSITS
The main ore deposits of the Rochester district occur in rhyolitic
rocks of the Koipato Group, the Rochester and Weaver Rhyolites. The
important sllver deposits on Nenzel Eill are confined to the Weaver
Rhyolite. Three main types of precious metal deposits are present in the
Rochester District - 1

district, the silver-bearing quartz veins with base metals at Nenzel Hill,
the Buck and Charley and similar deposits elsewhere in the district, the
silver-bearing, quartz stockworks at the Nevada Packard Mine and the
gold-tourmaline veins on Lincoln Hill.
The Rochester mines have been recently studied in detail by Vikre
(1981). The main mines on Nenzel Hill worked two main structures, the East
and West veins. The East vein trends ~5'-20°E and the West vein ~45'~. The
veins dip to the west and averaged nearly 2 m thick. The veins are
predominantly in the Weaver Rhyolite. Several other veins are present on
Nenzel Hill and the area between the main veins contain stockwork of
quartz veinlets which help form the bulk-minable silver deposit at
Rochester.
Most of the ore was partially to thoroughly oxidized and contained
silver haloids and variable amounts of acanthite. Sulfide ore contains
pyrite, sphalerite, tetrahedrite, galena, chalcopyrite, arsenopyrite,
covellite, chalcocite, stromeyerite, polybasite, pyrargyrite, pyrrhotite,
teallite and owyheeite (Vikre, 1981). Minor electrum is present.
The veins also contain quartz K-feldspar and sericite. The wallrocks
adjacent to the veins and veinlets are altered to a quartz-sericite-pyrite
assemblage.
Although earlier workers suggested that supergene enrichment was an
important factor in producing ore grade silver mineralization at Nenzel
Hill, Vikre (1981) states that supergene enrichment of silver is
negligible at Rochester.
The Nevada Packard Mine on Packard Hill is a quartz stockwork in
Weaver Rhyolite. The main workings, open pits and stopes follow a
N20°E, 75'~~ dipping zone of sheeting in the rhyolite. Quartz-K-feldspar
sulfide stockworks occur in the sheeted zone. The rhyolite is sericitized,
locally highly so.
Most of the ore was oxidized and the main silver minerals were
probably silver haloids and argentojarosite. The ore grade mineralization
apparently died out at depths of 10 m or less. The hypogene mineralization
consists of sulfide and quartz stockwork veinlets containing pyrite and
minor chalcopyrite. Recent heap leaching operations were conducted on
mineralized rock reportedly averaging between one and two ounces of silver
per ton.
The Looney Mine is located in a quartz vein 1/3 m wide, that trends
~60'~ and dips 50'~~. The vein cuts Weaver Rhyolite which is sericitized
and schistose adjacent to the vein. The wallrock is also tourmalinized.
The vein contains pyrite, galena, sphalerite, tetrahedrite and
chalcopyrite. The mine has been idle for many years.
The Buck and Charley Mine is located on quartz veins which cut
silicified Rochester Rhyolite. The veins contain pyrite, sphalerite and
minor galena. There is abundant fine-grained pyrite in the silicified
rhyolite adjacent to the veins. The property has been idle since the
1960's.
The Lincoln Hill Mine is located on a zone of quartz veining,
stockworksoand silicification 1-2 m wide in Rochester Rhyolite. The zone
trends N45 E and dips 65'~~. The zone contains abundant tourmaline and
pyrite and sparse sphalerite. An attempt to mine and heap leach low grade
ore from this property was made around 1980. Some drilling was also done
at this time.
The Plainview Group, worked for gold, is located on a zone of quartz
stringers and veinlets in Rochester Rhyolite. The stockwork zones are
Rochester District - 2

located on E-W and N-S trending, steeply dipping fractures in the
rhyolite. The quartz contains abundant iron oxides after pyrite. There is
no evidence of base metals in the vein quartz. These deposits and similar
prospects nearby, probably supplied the gold for the placer deposits in
Limerick Canyon, such as the Panama Placer.
The Panama Placer occurs in Limerick Basin which is a broad upland
basin, formed in the Pleistocene. Limerick Canyon has a steep gradient and
is rapidly downcutting into the basin. The gold in the placer gravels was
deposited in a sinuous stream channel of Pleistocene age. Placer gravels
in Limerick Canyon, currently being worked on a small scale, were derived
from erosion of gravels in Limerick Basin.
The so called Hamilton Beryl Mine is located on quartz veins and
jasperoid developed in shaly carbonaceous limestone gf the Prida
0
Formation. The main structure strikes NlO E, dips 80 E and is up to one
meter wide. It occurs along the margin of a large jasperoid body. The
veins contain tetrahedrite, and malachite and azurite. No beryl minerals
were observed.
GEOCBEMI STRY
A sample of vein quartz from Nenzel Hill is highly anomalous in
silver (1500 ppm) and anomalous in arsenic, copper, lead, antimony, and
zinc. It contains 0.65 ppm gold. The Looney Mine ore is highly anomalous
in silver (1500 ppm) and is anomalous in boron, bismuth, copper, lead (>2
percent), antimony, and zinc. It also contains 6 ppm gold.
Ore from the Nevada Packard Mine is highly anomalous in silver 030
ounces per ton), and is anomalous in arsenic, barium, copper, molybdenum,
lead, and antimony. One sample contained 1.0 ppm gold. Ore from the Buck
and Charley Mine is anomalous in silver, manganese, bismuth, cadmium,
copper, lead 0 2 percent), and zinc (>I percent). It contains 7.9 ppm gold.
A sample from the Lincoln Hill Mine is anomalous in manganese,
silver, boron, barium, beryllium, lead, antimony, tungsten, and zinc. It
also contained 37 ppm gold, more than one ounce per ton.
A sample from the Plainview Group is anomalous in manganese, silver,
barium, lead, tin, and zinc. It also contained 5.4 ppm gold.
The sample from the Hamilton Beryl Mine is anomalous in silver,
boron, cadmium, copper, molybdenum, lead, antimony, and zinc. The sample
also contained more than 1000 ppm tin, a very anomalous value, and
essentially no gold.
SELECTED REFERENCES
Johnson, M. G. (1977) Geology and ore deposits of Pershing County, Nevada:
Nevada Bureau of Mines and Geology Bulletin 89, p. 115.
Vikre, P. G. (1981) Silver mineralization in the Rochester district,
Nevada: Economic Geology, v. 76, no. 3, p. 580-609.
Wallace, R. E., Tatlock, D. B., Silberling, N. J., and Irwin, W. P. (1969)
Geologic map of the Unionville Quadrangle, Pershing County, Nevada:
U.S. Geological Survey Map GQ820.
Rochester District - 3

LOCATION
ROSEBUD DISTRICT
The Rosebud district is about halfway between Gerlach and Winnemucca
in north-central Pershing County. The major workings are on the east and
southeast flanks of Rosebud Peak from whence the district and camp got its
name. The Rosebud townsite is just north of the main Lovelock-Sulphur road
about 18 miles south of Sulphur and 60 miles north of Lovelock.
HISTORY
According to Vanderburg (1936) some of the ravines tributary to
Rosebud Canyon were worked in the 1870's by Chinese placer miners, and
several thousand dollars worth of gold was recovered. These same
tributarys and the main drainage from Rosebud Canyon were worked by placer
miners in the 1930's from 50 to 90 foot shafts dug in the stream courses.
At least three of the 1930-era shafts are still intact today.
According to Emmons (1910) gold-silver ore was discovered in veins
near the site of Rosebud in 1906. This discovery was followed by a
"senseless boom" in which, folly played into the hands of fraud.
Apparently, the town was developed well in advance of any sizeable
ore-bodies. As a consequence, most of the promoters and miners had left by
1908. A few die-hards hung on, however, and by late- 1908 a shipment of ore
was made from the district.
From 1908 to 1952 a total of 3,775 ounces of gold, 116,293 ounces of
silver, 18,772 pounds of copper and several tons of lead were produced
from the district (Johnson, 1977, table 16). Another 7,775 ounces of gold
were produced from placers down stream and to the west of Rosebud Peak and
the mines. The placer production is, however, considered to be part of the
production of the Rabbit Hole district that adjoins the Rosebud district
to the west.
GEOLOGICAL SETTING
The Rosebud district is in the Kamma Mountains that form part of the
southern boundary of the Black Rock Desert. The 6,500 foot-high Rosebud
Peak consists of a thick sequence of rhyolitic flows, flow breccias and
assorted pyroclastic rocks of Tertiary age that overlie metasedimentary
rocks of Triassic and Jurassic age (Johnson, 1977).
ORE DEPOSITS
All of the mineralization in the district is hosted in rhyolite flows
that are strongly altered and partly brecciated along fault structures.
Hydrothermal alteration has bleached the grayish-purple rhyolites to a
-white and reddish-brown. The major mine workings are along the altered
vein-fault system with several stopes following the veins to the surface.
Samples were taken from these stopes which consisted of kaolinized fault
breccia with minor quartz and visable sulfides. Other samples taken from
Rosebud District - 1

0
the main camp came from open-stopes which bear N80 W and cross under the
road which leads to the upper shaft. A major E-W vein system was also
sampled from underground workings. Ores from all of these workings were
treated in a small cyanide mill erected on the steep hill in the center of
the camp. The m i l l may have been erected during the more recent history of
the camp because there is no mention of it in any of the references.
Ransome (1908) reported the ore minerals at Rosebud to be argentite
and free-gold which occurred in kaolinized zones associated with a small
amount of quartz, some pyrite, limonite, and jarosite.
GEOCHEMICAL RELATIONSHIPS
All of the samples collected in the district contained detectable
gold and silver but at relatively low levels of concentration. Gold values
ranged from .05 to 5.0 ppm while silver ranged from 3 to 150 ppm.
Anomalous antimony was present in only one sample, arsenic values were low
to slightly anomalous. Most of our samples had low levels of base metal
concentrations, but anomalous molybdenum (300 ppm) occurred in one sample
and three samples reported the presence of tungsten near the lower
detection limit .
SELECTED REFERENCES
Johnson, M. G. (1977) Geology and Mineral Deposits-of Pershing County,
Nevada: NBMG Bull. 89.
Ransome, R. L. (1909) Notes on Some MinLng Districts in Humboldt County,
Nevada: USGS Bull. 414.
Rosebud District - 2

LOCATION
ROSE CREEK DISTRICT
The Rose Creek mining district is located at the extreme northern end
of the East Range. The mines and prospects of the district are located
generally north of Rose Creek Mountain and Dun Glen Peak. Mines further
south in the range are part of the Sierra (Dun Glen) mining district.
HISTORY
The Rose Creek district was probably prospected in the 18601s, at the
time of the first mining in the Sierra district to the south. Although the
Rose Creek Mine was first prospected for gold and copper, it was not
extensively explored until tungsten was discovered in 1937 (Johnson, 1977,
p. 83). Tungsten production, in 1943 and 1944, is reported to consist of
3170 tons of ore containing 2892 units of W03 (D. M. Lemmon, unpublished
data, 1944). Tungsten was also produced from the district in 1952 and 1955
(Johnson, 1977).
The Victory manganese prospect was discovered in 1939. It also
contains tungsten, probably chemically combined with the manganese oxides.
The property has not been mined for manganese or tungsten because the ore
is not amenable to production of high-grade manganese concentrates
(Iverson and Holmes, 1954).
In 1983 Minerals Associates, Inc. operated an open-pit mine for gold
in the eastern part of the district (Jones, 1984, p. 37). The open-pit
gold operation was inactive in the fall of 1984, but gravel for road metal
was being produced from a pit in alluvium near the mine buildings.
GEOLOGIC SETTING
The northern end of the East Range is underlain by a group of
Triassic sedimentary rock units which have been intruded by Jurassic
granodiorite. The sedimentary rocks consist of sandstone, shale, and
limestone; these are converted to marble, hornfels, tactite, and quartzite
near intrusive rocks.
ORE DEPOSITS
Skarn and quartz vein tungsten (scheelite) deposits occur in the
Triassic rocks of the district. Gold is reported from quartz veins in
granodiorite and manganese and tungsten occur in a calcite-chalcedony vein
in Triassic argillite.
The tungsten deposits are located north of Rose Creek Mountain (Rose
Creek Mine) and east of Rose Creek. At the Rose Creek Mine, a tactite band
parallal to bedding in the enclosing argillite consists of pyroxenes and
amphiboles with scheelite; garnet is reported to be absent (Roberts, 1944;
Kerr, 1946). The ore body has reportedly been explored about 125 m along
strike and 60 m down dip. Parts of the tactite bed contain abnormal
amounts of beryllium, but the distribution is irregular (Warner and
Rose Creek District - 1

others, 1959, p. 80-81). Pyrite is common in portions of the skarn, and
minor amounts of chalcopyrite, sphalerite, arsenopyrite, and molybdenite
are reported. The ore is said to contain as much as 1.5% copper and 0.14
oz gold per ton (Roberts, 1944). Quartz and quartz-feldspar veins in
granodiorite east of the mine also contain scheelite; the veins are narrow
and the amount of scheelite sparse (Johnson, 1977, p. 84).
The tungsten deposits east of Rose Creek (Rose Creek property)
consist of minor amounts of scheelite in narrow tactite bands in a
sequence of argillite and marble. Nearby, the metasedimentary rocks have
been intruded by dikes and sills of granodiorite. The tactite consists
chiefly of garnet, epidote, pyroxene, and quartz (Nevada Bureau of Mines
and Geology records).
At the Victory manganese prospect (S5,T34N,R36E) black manganese
oxide minerals occur with black calcite and chalcedonic silica in a
north-south-trending vein up to 20 m wide. The vein is exposed along the
mountain front; the wallrock is Triasslc argillite. The vein appears to be
high angle, and contains numerous textures suggesting chalcedony
pseudomorphic after lamellar calcite. Iverson and Holmes (1954, p. 1, 5)
report that psilomelane and pyrolusite are present, as well as barite.
Samples contain 0.24% WO but the tungsten is not easily separated from
3 '
the manganese oxides.
The minerals Associates Mine is located northwest of Rose Creek
Mountain near the center of the boundary between S5 and S8,T34N,R37E. The
property consists of an open pit and a nearby small cyanide heap-leach pad
for gold extraction. In the pit, milky quartz veins (10-20 cm wide) with
pyrite and sparse galena and sphalerite cut biotite granodiorite. The
quartz veins parallel the nearby intrusive contact with Triassic
argillite, trending due north, 60' west .
SELECTED REFERENCES
Iverson, H. G., and Holmes, D. T. (1954) Concentration of oxide and
silicate manganese ores from the vicinity of Winnemucca, Pershing
County, Nevada: U.S. Bureau of Mines Report of Investigations 5022.
Johnson, M. G. (1977) Geology and mineral deposits of Pershing County,
Nevada: Nevada Bureau of Mines and Geology Bulletin 89.
Jones, R. B. (1984) Directory of Nevada mine operations active during
1983, in The Nevada Mineral Industry - 1983: Nevada Bureau of Mines and
~eolo~~~~ecial Publication MI-1983.
Kerr, P. F. (1946) Tungsten mineralization in the United States:
Geological Society of America Memoir 15.
Roberts, R. J. (1944) The Rose Creek tungsten mine, Pershing County,
Nevada: U.S. Geologcal Survey Bulletin 940A, p. 1-14.
Warner, L. A., Holser, W. T., Wilmarth, V. R., and Cameron, E. N. (1959)
Occurrence of nonpegmatite beryllium in the United States: U.S.
Geological Survey Professional Paper 318.
Rose Creek Dfstrict - 2

LOCATION
RYE PATCH DISTRICT
The Rye Patch district is located in the Humboldt Range, Pershing
County, Nevada in Twps. 29, and 30N, Rges. 33 and 34E. It is accessible
via dirt roads from U.S. Interstate 80.
HISTORY
According to Johnson (1977), the district was organized in 1862. The
Rye Patch group of silver mines produced over $600,000 worth of ore in the
period 1864-81. There has been only minor production from the Rye Patch
mines in subsequent years. A few tons of antimony ore was mined from
stibnite veins in Panther Canyon.
Tungsten was discovered in the district in Wright Canyon in 1918, but
no significant production resulted until the Oreana Mine was developed in
1934. The Oreana Mine produced 18,600 units of W03 from 1935-42. Minor
tungsten production is also reported from the Rye Patch Agnes Mine.
Uranium mineralization occurs at the Stalins Present prospect in Rocky
Canyon, but no ore has been mined.
GEOLOGIC SETTING
The Rochester Rhyolite forms the bedrock in the eastern part of the
Rye Patch district. It is overlain by the Prida Formation which is present
in the western part of the district and contains most of the districts ore
deposits. Both of these units are intruded by a granitic stock centered on
Rocky and Wright Canyons. The Prida Formation is intruded by diabase sills.
ORE DEPOSITS
The Rye Patch group of mines is located in the lower member of the
Prida Formation, approximately 100 meters from the contact with the
Rochester Rhyolite. The deposits occur as quartz cemented, stockwork
breccias in carbonaceous, shaly limestone. The brecciation, in part of
hydrothermal origin, occurs along a north to northwest trending fault
zone. Ore minerals present include pyrite, sphalerite, and minor galena
and tetrahedrite. Reportedly scheelite, jamesonite and acanthite are also
present in the ores.
The Rye Patch Agnes or Shortino Mine is located in carbonaceous shale
and limestone of the Prida Formation adjacent to a granitic intrusive
body. Scattered lenses of quartz occur -in brecciated shale and shaly
limestone. A north-trending fault zone, dipping shallowly to the west,
cuts through the mineralization zone. Reportedly the mine produced some
tungsten ore in 1954 and some silver ore in 1917-18. Beryllium is reported
to occur in silicated limestone adjacent to the granite contact.
The Oceana Mine produced significant amounts of scheelite from
pegmatitic, quartz-fluorite-beryl-scheelfte-muscovite bodies that occur in
Rye Patch District - 1

diabase sills in the Prida Formation and in Prida limestone. The beryl is
usually green in color and crystals range in size From microscopic to
several centimeters in length. Reportedly, native antimony is locally
present in the ore.
The Panther Canyon antimony mine produced Four toas of antimony ore
according to Lawrence (1963). Lawrence described the antimony mine as
occurring in a diabase dike cutting lower Prida limestone adjacent to the
contact with rhyolite of the Koipato Group. However, during the course of
this investigation, another antimony deposit was found in Panther Canyon,
approximately 112 mile east of the workings described by Lawrence. At this
locality, two quartz veins occur in Rochester Rhyolite. Ore vein trends
N30E and dips 45'~~. It contains abundant stibonite and antimony oxide:
and is up to 112 meters thick. The other vein trends ~50'~ and dips 35 SW.
The vein contains bands of tourmaline, pyrite, sphalerite and jamesonite.
The veins are explored by several adits. An old road, now inaccessible to
vehicles, leads to the deposits.
At the mouth of Panther Canyon, a tungsten prospect is located in
limestone of the Prida Formation. Scheelite occurs in quartz veins up to
30 cm thick, parallel to bedding in the limestone. The quartz contains
scheelite, pyrite and a fine-grained dark gray sulfide of lead and bismuth.
GEOCHEMISTRY
Samples from the Rye Patch mines are anomalous in silver, boron,
cadmium, copper, and are highly anomalous in lead, .antimony and zinc. At
the Rye Patch Agnes Mine, the sample collected contained anomalous barium,
chrome, molybdenum, antimony, vanadium (.2X) and zinc. In addition,
tungsten and beryllium are present in the deposit.
The Oreana Mine is anomalous in tungsten, beryllium and fluorine.
The Panther Canyon antimony deposit contains in addition to antimony,
anomalous arsenic, silver, copper, lead and zinc. The ore contains 0.2 ppm
gold. The quartz vein is anomalous in silver, boron, bismuth, cadmium,
copper, lead, antimony and zinc and contains 0.85 ppm gold.
The tungsten prospect in Panther Canyon, in addition to tungsten, is
anomalous in silver, bismuth, cadmium, copper, molybdenum, lead, vanadium
and zinc.
SELECTED REFERENCES
Johnson, M. G. (1977) Geology and mineral deposits OF Pershing County,
Nevada: Nevada Bureau of Mines and Geology Bulletin 89, p. 115.
Lawrence, E. F. (1963) Antimony deposits OF Nevada: Nevada Bureau of Mines
and Geology Bulletin 61, p. 241.
Wallace, R. E., Tatlock, D. B., Silberling, N. J., and Irwin, W. P. (1969)
Geologic map of the Unionville Quadrangle, Pershing County, Nevada:
U.S. Geologic Survey Map GQ820.
Rye Patch District - 2

LOCATION
SAN EMIDIO DESERT - LAKE RANGE AREA
For the purposes of this paper the area includes the east side of the
San Emidio Desert and the north end of the Lake Range. This puts it
approximately 12 miles south of Gerlach and to the west of State Highway
447. The entire area is on the Kumiva Peak 15 minute topographic map.
HISTORY
Not too much is known about this area and very little has been
written about it. The area contains occurrences of sulphur, cinnabar, and
gold. The first mention of this area that the writer found in the
literature was by Olson (NBMG Bull. 65, p. 257). He discusses the sulphur
deposits but closes his write-up by stating that the data came via oral
communication from H. F. Bonham, Jr. The only other mention of this area
in published literature that the writer could find is in Bonham and Papke
(Bonham and Papke, 1969, p. 94 & 130) where Bonham discusses the cinnabar
occurrences and Papke mentions, again, the sulphur occurrences. No mention
is made of the gold occurrence shown on the Mineral Resource map of Washoe
and Storey Counties (Bonham and Papke, 1969). Bailey and Jones
(unpublished data) have visited ths sulphur/cinnabar area but have no more
to say about it than can be found in Bonham and Papke (op. cit.). There is
no recorded production for this area, however, Olson (op. cit.) through
Bonham (?) determined that a few tons of high-grade sulphur has been mined
and shipped in past years. The cinnabar is merely an occurrence and will
never be economic. The gold occurrence as shown by Bonham and Papke (op.
cit.) may possibly have had a very small amount of production.
GEOLOGIC SETTING
Lake Lahontan occupied most of the basins in northwestern Nevada
during the late Pleistocene (Bonham and Papke, p. 42) and one of these
present day basins is the San Emidio Desert. Basically these lake
sediments consist of clays, silts and minor sand in the interior of the
Desert and intermixed clays, silts, sands and gravel along the margins.
"The Lake Range bounds Pyramid Lake on the east and extends north to
just south of the town of Empire. It is an eastward-tilted block bounded
on the west by northerly-trending faults with substantial dip slip." At
the north end of the range is a small area of Mesozoic metamorphic rocks,
chiefly slate and quartzite, but "most of the range is composed of dacitic
to basaltic volcanic rocks of Miocene and Pliocene age. Lenses of tuff and
tuffaceous pyroclastic rocks and thin dacite welded, ash-flow tuffs are
intercalated with the flows and breccias" (Bonham and Papke, 1969, p. 49).
ORE DEPOSITS
Only two mineral localities are known to exist in this area. One is a
sulphur-cinnabar occurrence and the second is a gold occurrence.
San Emidio Desert-Lake Range Area - 1

The sulphur-cinnabar occurrence is nicely described by Bonham and
Papke (op. cit.) and their data is used freely from here on. "A
northward-trending zone of alteration is intermittently exposed for a
distance of over 2 miles on an alluvial-covered slope about 3,000 feet
west of the linear front of the mountain range. Pleistocene sediments and
Lake Lahontan beds are exposed in trenches, cuts, and pits along the zone.
The earlier rocks range from sandstones to fine conglomerates and are
altered in all exposures. The Lake Lahontan sediments are silts and sands,
with a few gravel layers; they are flat lying and overlie the altered
rocks. "
"Native sulphur is poorly exposed in a few places along the zone as
disseminated particles and small, irregular masses in dark-gray clay,
siliceous sinter and opal. Crystalline gypsum is abundant, generally as a
one-foot or thicker layer on top of all the altered material. In some
places the gypsum overlies the sulphur with a fairly sharp contact. ...
The water table appears to be near the surface and may limit the sulphur
occurrence to a shallow depth."
As far as is known, Bonham (op. cit.) is the first person to note and
write-up the presence of cinnabar in this area. The cinnabar occurs with
the sulphur and is also associated with gypsum, opal, chalcedony, quartz,
kaolinite, sericite, and other alteration minerals. In places the zone has
an exposed width of over 100 feet. Bonham observed cinnabar at two places
in the altered zone and a mercury soil anomaly was detected at a third
locality.
"The cinnabar occurs as very-fine-grained particles disseminated
through both silicified and non-silicified phases of the altered rock, and
as encrustations and films coating fractures and open spaces. ... The
distribution of the cinnabar appears to be approximately coincident with
that of the native sulphur, but there are zones high in sulphur which seem
to be low in cinnabar and other areas which contain visible cinnabar and
little or no sulphur."
Two pictures, 3 and 4, were taken here and sample /I2402 was collected
at the more northerly group of trenches.
Bonham and Papke (op. cit.) do not mention the gold occurrence, even
though it is shown on their mineral resource map. This prospect lies about
a mile north of the northern group of cuts on the sulphur-cinnabar
prospect and then about a mile to the east. It is accessible via a fairly
good road that is shown on the Kumiva Peak 15 minute topographic map. It
is not knovn what name this property goes by. There are three generations
of claim posts in the immediate area, only one of which had any paper on
them. This group is known as the S.E.D. claims and is the youngest of the
three sets of claim posts. It could not be determined if the old workings
are in fact part of the S.E.D. claims. If they are not then they are on
the immediate south edge of this claim group. The S.E.D. claims extend
north from these workings approximately three miles and cover outcrops of
highly iron-stained Tertiary volcanics, most of which are of rhyolitic
composition. Sample #2401 was collected at about the center most portion
of the claim block, going in a north-south direction.
At the old prospect site there is a tin sback and two adits. One adit
is slightly east of the "cabin". It trends N70 E and is approximately 100
feet long. It follows a brecciated quartz vein in metasediments and it
appears that Tertiary volcanics make up the contact to the north of the
vein. Sample P2403 was collected here. The second adit is west of the
San Emidio Desert-Lake Range Area - 2

"cabin" a few hundred feet. It trends ~ 4 5 ' and ~ appears to be in
metasediments. It may be 200 feet long.
REFERENCES
Bonham, H.F., Jr. and Papke, K.G. (1969) Geology and mineral deposits of
Washoe and Storey Counties, Nevada: NBMG Bull. 70, 140 p.
Olson, R.H.(1964) chp. on sulphur in mineral and water resources of
Nevada: NBMG Bull. 65, p. 254-258.
San Emidio Desert-Lake Range Area - 3

LOCATION
SAN JACINTO DISTRICT
The San Jacinto district covers about 16 square miles and is located
on the southern tip of the Antelope Range, northern Pershing County. The
southern boundary of the district is accessible by traveling 10 miles
northwest from the spillway of Rye Patch Dam. The route traverses the wash
between the Trinity and Antelope Ranges.
HI STORY
According to Paher (1970) silver was discovered in the district in
the early 1870's. Whitehill (1877) was more specific when he reported, the
first discovery in the district was in 1875 and consisted of deposits of
argentiferous galena and lead carbonates. Lincoln (1923) reported a
shipment of lead-silver ore from the district in 1876 by a San Francisco
Company. The only mine in the district is the Poker Brown or Old Tom Mine
that produced an unknown but small amount of lead silver ore between 1865
and 1926 when owned by the Super Metals Syndicate (Johnson, 1977, p. 80).
GEOLOGIC SETTING
The district is underlain by slates and shales that are partly
metamorphosed and intruded by granodiorite. Granodiorite does not outcrop
but was reported to be exposed in the bottom of one of the mine workings.
The sedimentary rocks have been cut by white quartz veins that range in
thickness from a few inches to 6 feet. Exposures of the veins in
silicified metasediments can be traced crossing washs for several miles to
the west of the main camp. Many of the outcrops have been prospected but
they appear to be barren.
ORE DEPOSITS
The principal vein system at the Poker Brown Mine trends N40-60E and
dips steeply to the NE. A second vein system trends in the same direction
but dips at 45'~~. The veins are commonly heavily iron stained but contain
very little visable sulfides. Vein material collected from dumps on the
east side of the main camp was found to contain galena and arsenopyrite.
GEOCHEMICAL RELATIONSHIPS
The high arsenic values from our samples lends credibility to a
report by Lincoln (1923) that arsenic ore had been disc'overed in the
district. Lincoln's report, however, lacked any further details. The veins
sampled were also anomalous in -zinc, lead, antimony, cadmium, and boron.
Silver ranged in value from 300-500 ppm and gold from .25 to .8 ppm.
The area has been staked and restaked in recent years but no active
mining has taken place for many years.
San Jacinto District - 1

SELECTED REFERENCES
Johnson, M. G. (1977) Geological and Mineral Deposits of Pershing County,
Nevada: NBMG Bull. 89.
Lincoln, F. C. (1923) Mining Districts and Mineral Resources of Nevada:
Newsletter Publishing Co., Reno, Nevada.
Paher, A. W. (1970) Nevada Ghost Towns and Mining Camps: Howell-North,
Berkley, Calif.
Whitehill, H. R. (1877) Biennial Report of the State Mineralogist of the
State of Nevada for the Year 1875 and 1876: State Printer, Carson City,
Nevada.
San Jacinto District - 2

LOCATION
SAWTOOTH DISTRICT
The Sawtooth district is on the Pershing-Humboldt County line about
10 airline miles, a little south and west of Jungo, a railroad siding on
the Western Pacific Railroad. The mines and prospects can be located on
the Sawtooth Knob and Sugarloaf Knob 7-1/2 minute topographic maps.
HISTORY
Placer gold was discovered in the district in 1931 as a result of
prospecting stimulated by the discovery of the gold veins at Scossa, which
is about 12 miles south. Shortly after the discovery many claims were
staked and before the end of the summer of 1931 as many as 35 men were dry
washing in the district. It is reported that some individuals recovered as
much as $35 per day. The placers were worked continuously until 1942 and
intermittently since that time. Because there is little water in the area
available for working the placers, dry concentration methods have been the
most prevalent. Various attempts at large-scale placer mining have not
been successful. Johnson states that reported production amounts to 810 oz
of gold.
GEOLOGIC SETTING
Placer gold has been found over a fairly level area of about six
square miles, near the west side of Sawtooth Knob. An unusual feature of
the placer is that the best values have been found at shallow depths. Much
of the gold was found above a false clay bedrock at depths of eight inches
to two feet. The gravel is rough and angular, with a small percentage of
boulders. Considerable clay is present in places and the clayey material
had to be dried and pulverized before a satisfactory saving of the gold
could be made with the dry washers. Some barren white quartz fragments
were found on the surface and the prospectors used these as an indicator
of gold concentration. The gold was coarse and rough and averaged about
880 fine. No time was spent in this district during the current program.
SELECTED REFERENCES
Johnson, M. G. (1973) Placer gold deposits of Nevada: USGS Bull. 1356, p.
2 9-30.
Vanderburg, W. 0. (1936) Placer mining in Nevada: NBMG Bull. 27, p.
155-156.
(1938) Reconnaissance of mining districts in Humboldt County,
Nevada: U.S. Bur. Min. IC 6995, p. 42.
Sawtooth District - 1

LOCATION
SCOSSA DISTRICT
The Scossa district is in north-central Pershing County and is
accessible via the Lovelock-Sulphur road which bisects the district. The
center of the district is about 60 miles north of Lovelock in Sec. LO,
T33N,R30E.
HISTORY
The area included in the present Scossa district was originally the
eastern part of the old Antelope Mining district. After the 1930 discovery
of gold at the North Star claim by the Scossa brothers the area was
designated as the Scossa district. The North Star strike was on quartz
veins that contained nodules and stringers of free-gold. The various
discovery claims were later consolidated and developed as the Dawes Gold
Mine, Inc. The major workings are along three northeast-trending quartz
veins that were reported by Johnson (1977) to be 1-6 feet wide. The
underground development included a 400 foot shaft and LOO0 feet of lateral
workings. From 1931-34 the district produced 489 oz/gold and 705 oz/silver.
The Hawkeye Mine, located to the north of thg Dawes property, was
discovered in 1934. The mine worked a 16 inch, 75 dipping vein from a 70
foot shaft and 350 feet of laterals. The Dawes and -the Hawkeye mines were
the biggest producers in the district from 1930-1939. After 1939, the
veins played out and the camp declined (Paher, 1977). Some placer activity
between 1934-1955 produced minor amounts of gold. There was also a brief
period of titanium placer exploration, that operated without success to
the west of the main camp. Today, only a few buildings are still standing
at the bottom of the mountain that marks the townsite.
GEOLOGIC SETTING
The northwestern spur of the Antelope Range in the vicinity of the
major mining activity at Scossa is composed of interbedded slate, schist,
quartzite and limestone of Jurassic and Triassic age. The sediments have
been intruded by diorite dikes, and two episodes of quartz veining only
one of which carried gold (Jones and others, 1931). Jones states that the
veins were formed during periods of successive movement along shears,
initially by quartz diorite dikes and later by high temperature barren
quartz and finally by low temperature gold bearing quartz veins. The
formation of the dikes and high temperature quartz had a tendency to form
impervious zones and thereby localize the gold bearing veins at
intersections with dikes and silicified rocks.
ORE DEPOSITS
Quartz vein systems and placers are the only two types of deposits
that have been mined in the district. However, a third type precious metal
occurrence was prospected by older workings on the west side of the
Scossa District - 1

district. Here, gossan-like mineralization along a NNW trending structure
in limestone can be traced on the surface for several hundred yards.
During 1983 a series of drill roads and pads were constructed and used to
drill along the structure.
GEOCHEMICAL RELATIONSHIPS
Mineralization in the mines was reported to be a mixture of yellow
gold and electrum intergrowths in quartz. Alunite was sometimes present
associated with the electrum and fine-grained quartz. Our samples revealed
low concentrations of base metals from the four sample sites within the
district. A sample from a prospect in the area of drilling on the west
side of the district ran .20 ppm gold, and 500 ppm silver with 1000 ppm
arsenic and only minor base metals.
SELECTED REFERENCES
Johnson, M. G. (1977) Geology and Mineral Deposits of Pershing County,
Nevada: NBMG Bull. 89.
Jones, J. C., Smith, A. M., and Stoddard, C. (1931) The Preliminary Survey
of the Scossa Mining District, Pershing County, Nevada: Nevada
Uni .versity Bull. 11.
Paher, S. W. (1970) Nevada Ghost Towns and Mining Camps: Howell-North, San
Di ego.
Scossa District - 2

LOCATION
SEVEN TROUGHS DISTRICT
The Seven Troughs district covers the central and southern parts of
the Seven Troughs Range in central Pershing County. The silver-gold mines
of the district are located on the eastern slope of the range in the
southeast corner of T30N,R28E, and the southwest corner of T30N,R29E.
Principal mining camps in the district were Seven Troughs, up Seven
Troughs Canyon, Mazuma, at the mouth of this canyon, and Vernon, located
to the southwest along the front of the range. The present camp of Seven
Troughs, or Tunnel Camp, is not the original tovn but is a more recent
settlement which grew near the site of the last mill operation in the
district.
HISTORY
The earliest recorded mineral discoveries in the Seven roughs range
were made in Stonehouse Canyon, now considered to be in the adjacent
Farrell district, in about 1863. Gold was discovered in the upper part of
Seven Troughs canyon in 1905, but it was not until 1907 that the Seven
Troughs began to attract attention (Ransome, 1909). The Mazuma Hills Mine
opened that year followed soon after by the Fairview and Kindergarten
mines. Within a short time after opening the Mazuma Mine, claims were
staked along the entire east flank of the range and by 1908 25 mining
companies were operating in the district (Johnson, 1977). Tales were told
of ore that yielded up to $100,000 per ton, but the district average was
around $45-$60 per ton (Johnson, 1977). Mining activity in the Seven
Troughs district was nearly continuous from 1907 to 1962 but the most
productive years were between 1908 and 1916. In the period between 1927
and 1932, an 11,900-foot drainage tunnel was driven from the range front
to the central portion of the district. A few tens of thousands of tons of
ore were produced from the tunnel at that time (Bruce, 1980). The district
is credited with production of over 155,000 ounces of gold and around 1
million ounces of silver with a total value of slightly under $4 million.
Activity continues in the district and there have been several
exploration programs carried out over the past several years. The results
of these programs are not known, however, and no mining is in progress at
present.
GEOLOGIC SETTING
The northwestern and southern parts of the Seven Troughs Range are
underlain by Triassic and Jurassic sedimentary rocks that have been
intruded and locally metamorphosed by Cretaceous granodiorite. The
northeastern and central parts of the range are underlain by a thick
sequence of rhyolites and andesites of Tertiary age. The volcanic rocks
that make up most of the east flank of the range consist mainly of
rhyolitic flows that interfinger with and intrude andesitic rocks.
Distinction between the two rock types is difficult where they are
complexly interfingered (Johnson, 1977).
Seven Troughs District - 1

The dominant structural features in the district are a series of
subparallel, north-northeast trending faults with east side down
displacements. East-trending faults are common and, where they intersect
north-trending faults, the latter are commonly displaced and folded
(Bruce, 1980).
Two separate alteration events have been described at Seven Troughs;
an early, pervasive propylitic event which altered rocks to an assemblage
of montmorillonite, quartz, chlorite, calcite, and pyrite, and a second
period of argillic alteration restricted to the immediate area of
mineralized structures (Bruce, 1980).
ORE DEPOSITS
The gold-silver deposits at Seven Troughs occur in a network of veins
and veinlets paralleling dikes and fissures in the rhyolites and along
contacts with other volcanic units. The veins generally have a north-south
trend but there are many cross stringers and faults. The veins consist of
soft crushed material representing zones of brecciation or small fissures
filled with friable, sugary quartz and carry native gold alloyed with
silver (Johnson, 1977). Some proustite and possibly some stephanite or
polybasite were found with the gold in the Fairview Mine, and a little
chalcopyrite was noted in 1908 in the Mazuma Mine (Ransome, 1909).
Stibnite occurs as crystalline masses in quartz in at least two
localities in the district but, according to Ransome (1909), it does not
appear to have any intimate connection with rich ore.
Tungsten ores are found in two general areas within the Seven Troughs
district, one to the west of Vernon near the pass leading to Porter
Springs, and another further south, on the eastern tip of the Seven
Troughs Range.
The first area, near Vernon, was discovered in 1943 and is credited
with producing about 2200 units of W03 between 1953 and 1962 (Stager, in
prep). Most of this production came from the Holiday Mine, a contact
deposit on the southwest flank of the range. At the Vernon Mine, on the
east side of the range southwest of Vernon, scheelite was mined from thin
quartz veins and pegmatites which cut granodiorite.
In the second area, on the southeastern tip of the Seven Troughs
Range about 6 miles southwest of Vernon, scheelite is found as crystals in
white quartz veins which follow northeast-striking shear zones in
metasedimentary rocks. Some tungsten mineralization is also present in a
thin tactite zone. This area was first claimed in the early l97O1s, and
has had no tungsten production.
GEOCHEMICAL RELATIONSHIPS
Samples of ores collected in the central Seven Troughs district were
anomalous in silver and gold, but contained little else. All were
anomalous in barium but arsenic and antimony values were low as were all
base metals. A sample from the J & B Mine, north of Seven Troughs, was
anomalous in arsenic as well as gold and silver, and another sample from
the Portland Mine near Vernon was also high in arsenic.
Ore samples from the tungsten deposits near Vernon were uniformly
high in manganese and tungsten. Two samples contained small amounts of
Seven Troughs District - 2

tin, and one contained high molybdenum. Sample 2823, from quartz veins
near the tungsten prospects, contained 2.5 ppm gold.
SELECTED REFERENCES
Bruce, W. R. (1980) Geology and Mineral Deposits of the Seven Troughs
Mining District, Pershing County, Nevada: SEG field trip guide, unpub.
Johnson, M. G. (1977) Geology and Mineral Deposits of Pershing County,
Nevada: NBMG Bull. 89.
Lawrence, E. F. (1963) Antimony Deposits of Nevada: NBMG Bull. 61.
Lincoln, F. C. (1923) Mining Districts and Mineral Resources of Nevada:
Nevada Newsletter Publishing Co., Reno.
Ransome, F. L. (1909) Notes on some Mining Districts in Humboldt County,
Nevada: USGS Bull. 414.
Shamberger, H. A. (1972) The Story of Seven Troughs, Pershing County,
Nevada: Nevada Historical Press, Carson City, Nevada.
Stager, H. K. (in prep) Tungsten Deposits of Nevada: NBMG Bull.
Seven Troughs District - 3

LOCATION
SHERMAN DISTRICT
The Sherman, or Bloody Run, mining district is located in the Bloody
Run Hills about 15 miles north of Winnemucca, Humboldt County. The two
areas of mining properties are northwest of Bloody Run Peak, in the
southern part of the district, and in the China Garden area southwest of
Paradise Hill.
HISTORY
Vanderburg (1938) reports that gold was discovered near China Garden
in the north part of this district in 1922 by a sheepherder. The property,
named the Basque Mine, began production in 1930. Work in the district was
intermittent up until about 1937 but there has been no recorded
production. There is no activity in the district at the present time.
GEOLOGIC SETTING
The geology of the Bloody Run Hills is similar to that of the main
Santa Rosa Range to the north. A thick sequence of Jurassic-Triassic
metasediments has been intruded by Cretaceous granodiorite. The
metasedimentary rocks, consisting of phyllite, slate, and quartzite, crop
out on the north, south, and central parts of the range. Two large masses
of granodiorite form the core of the range, one forms Bloody Run Peak, the
other crops out north of China Garden. Tertiary basalt and andesite flows
cover the lower flanks of the range on the extreme north and south ends.
ORE DEPOSITS
Only two small areas of prospecting occur in the Sherman district.
The Basque Mine, located in the China Garden area, has seen the most
activity. The mine workings follow a large, north-south vein system that
crops out for several hundred feet along a ridge. Free gold is reported to
be present in a 4 to 12 foot wide quartz vein which cuts a shaley member
of the Triassic Rsspberry Formation. The vein material seen on dumps
display prominent slickensides but no visible mineralization.
The other prospect area, northwest of Bloody Run Peak, consists of
narrow, north-south striking quartz veins which cut granodiorite. The
veins range from 3 to 5 feet thick and contain spotty scheelite and
molybdenite mineralization. According to Stager (in prep), 270 units of
W03 were produced from this property between 1942 and 1944.
Sherman District - 1

SELECTED WFERENCES
Stager, H. K. (in prep) Tungsten Deposits of Nevada: NBMG Bull.
Willden, R. (1964) Geology and Mineral Deposits of Humboldt County,
Nevada: NBMG Bull. 59.
Vanderburg, W. 0. (1938) Reconnaissance of Mining Districts in Humboldt
County, Nevada: USBM IC 6995.
Sherman District - 2

LOCATION
SHON DISTRICT
The Shon district covers a small area on the extreme southern tip of
the Santa Rosa Range in east central Humboldt County. The mining area is
just north of the small community of Paradise Hill, about 25 miles north
of Winnemucca.
HISTORY
According to Lincoln (1923), mining was underway in this district in
1878 and the district was again active in 1909, 1914, and 1917-1918. This
early activity was for gold and silver, but no record of production
exists. Scheelite was discovered in the distrtct in about 1943, and a
little ore was mined during the periods 1943-1944, and 1955. Total
recorded production of tungsten was less than 200 units of W03 (Stager, in
prep)
GEOLOGIC SETTING
Rocks exposed in the district are chiefly calcareous sedimentary
rocks of the Triassic Winnemucca Formation, overlain by phyllites and
quartzites of the Triassic O'Neill Formation. These rocks are intruded by
Cretaceous granodiorite and are overlain locally by basalt and andesite
flows of Tertiary age.
ORE DEPOSITS
At the Clough Mine, sulfide-bearing quartz veins up to 2 feet in
width cut rnetasedimentary rocks and granodiorite. Most of the work at this
property has been for gold and silver, but scheelite also occurs in the
veins (Willden, 1964).
Several small scheelite-bearing tactite deposits have been prospected
on the southeastern flank on the Santa Rosa Range, southeast of the Clough
Mine. The tactite bands are narrow but contain high-grade scheelite in
some areas. Two of the properties, the Ledge Mine, and the Great Northern
claims, have had scheelite production.
SELECTED REFERENCES
Lincoln, F. C. (1923) Mining Districts and Mineral Resources of Nevada:
Nevada Newsletter Publishing Co., Reno, NV.
Stager, H. K. (in prep) Tungsten Deposits of Nevada: NBMG Bull.
Willden, R. (1964) Geology and Mineral Deposits of Humboldt County,
Nevada: NBMG Bull. 59.
Shon District - 1

LOCATION
SIERRA DISTRICT
The Sierra mining district is a large district that occupies much of
the northern end of the East Range, between the Rose Creek district on the
north and the Willow Creek district on the south. The district is also
called the Dun Glen or Chafey district, and is a combination of that
district and the Sunshine and Oro Fino districts. The district extends
from near Dun Glen Peak on the north to Rockhill Canyon on the south.
Johnson (1977, p.89) reports that the mines and placers of the Willow
Creek district on the south were probably once considered part of the
Sierra district.
HISTORY
Silver ore was discovered in the Sierra district in 1862, and
numerous mines and prospects were worked during the following 20 years.
There are no records concerning this early silver mining; Johnson (1977)
believes that the deposits worked during this period were located on the
east flank of the range. Gold mines in the district were apparently
developed after the silver mines, and were more productive. The principal
lode gold mines were the Black Hole - Monroe Mines (subsequently worked by
the White Bear Syndicate and known as the White Bear or Mayflower Mines),
the Auld Lang Syne, and the Auburn. These mines are located along Dun Glen
Canyon, east of the townsite of Dun Glen (later called Chafey for the
period 1908-1911). The production from the lode deposits is not well
known. Couch and Carpenter (1943) report production of gold, silver, lead,
and copper from 1879 to 1933 of $297,589. Vanderburg (1936b, p. 39)
reports that production from 1908 to 1921 was $314,441; this does not
include the period of greatest activity, from 1862-1880. Vanderburg
(1936b, p. 39) estimates that the total lode production exceeds $1,000,000.
Placer gold deposists were discovered in the 18601s, a short time
after the lode discoveries (Vanderburg, 1936a, p. 156). The deposits are
reported to be among the most productive in Nevada, with estimated
production of $4 million before 1900. Because of inaccuracies in early
records, there is some doubt that the production during that period was
this high (Johnson, 1977, p. 89). Chinese miners worked most of the
placers; many of the canyons on the west side of the East Range south of
Dun Glen Canyon were worked and explored along most of their length. The
placers were also worked and explored in the 1930's in part by power
shovel, land dredge, and hydralicking (Vanderburg, 1936a, p. 156). Several
small placer operations were in operation in McCann and Dun Glen Canyon in
1983 (Jones, 1984, p. 37-38) and 1984.
ORE DEPOSITS
The major gold lode deposits in the district are &hose glong Dun Glen
Canyon. The Black Hole and Monroe Mine are along a N50 E, 45 -50 SE quartz
vein which is up to 2 m wide and extends for nearly 1.5 km between the two
mines. The vein quartz is massive and saccharoidal, and contains galena,
Sierra District - 1

pyrite, tetrahedrite, and reportedly sphalerite and native gold (Ransome,
1909, p. 51). At the Honroe Mine, the wallrock is felsic volcanic and
volcaniclastic rocks of the Koipato Croup. The rocks are silicified near
the veins.
At the Auburn Hine (S6,T33NBR37E) Triassic phyllite and conglomerate
0 0
are cut by a due N, 0 -35 E quartz vein. Workings are apparently in the
oxide zone, as no sulfide minerals were observed on dumps. The vein matter
remaining is approximately 30 cm wide, but stopes are up to 1.5 m. Sparse
sericite is present in the milky vein quartz. Panning of near-surface
samples obtained in bulldozer cuts in limestone and shale occasionally
reveals a few grains of cinnabar (Oscar Adkins, as reported in Bailey and
others, 1984).
0
A: the Auld Lang Syne (Lang Syne) Mine (S12,T33NBR36E), a due N,
65 -70 E quartz vein cuts Triassic Koipato Group metarhyolite(?). The
milky vein quartz noted on dumps does not contain any sulfide minerals;
however, Ransome reports pyrite and arsenopyrite from dump samples.
A second group of vein deposits is located southeast of the Dun Glen
Canyon Mines, on the east flank of the range. These mines may include
those worked for silver during the 1860's and 70's. The massive, milky
quartz veins cut Koipato'Croup metarhyolite and Prida Formation limestone.
Probable tetrahedrite and 'jamesonite occur at mines in S9 ,T33NBR37E;
sphalerite and galena are present at the Little Jupiter Mine. Oxide copper
minerals at the Four Sisters Mine suggest the presence of primary sulfide
copper minerals at depth. The volcanic wallrocks are locally somewhat
argillized, but no obvious jasperoid is developed in the carbonate units.
The Little Jupiter Hine is being operated as a goldmine. Values reported
from northerly-trending quartz veins and stockworks at the Little Jupiter
can be several tenths to several ounces of gold per ton and 5-7 ounces
silver per ton (Nevada Bureau of Mines files).
Extensive placer gold deposits have been worked in several canyons
which drain the west flank of the East Range. The gravels in these canyons
are 6-12 m in thickness. The gold is usually concentrated on bedrock and
in some benches on canyon sides (Johnson, 1977, p. 90; Vanderburg, 1936a,
p. 156-158). The gold in the deposits was derived by erosion throughout
the region of numerous gold veins similar to those mined in Dun Glen
Canyon.
SELECTED REFERENCES
Bailey, E. H. and others (1984) Quicksilver deposits of Nevada:
unpublished manuscript, Nevada Bureau of Mines and Geology.
Couch, B. F. and Carpenter, J. A. (1943) Nevada's metal and mineral
production: Nevada Bureau of Mines and Geology Bulletin 38.
Ferguson, H. G., Muller, S. W., and Roberts, R. J. (1951) Geology of the
Winnemucca quadrangle, Nevada: U.S. Geological Survey Map GQ-11.
Johnson, M. G. (1977) Geology and mineral deposits of Pershing County,
Nevada: Nevada Bureau of Mines and Geology Bulletin 89.
Sierra District - 2

Jones, R. B. (1984) Directory of Nevada mine operations active during
1983, in Nevada Mineral Industry 1983: Nevada Bureau of Mines and
~ e o l o ~ ~ ~ ~ Publication e c i a l MI-1983.
Ransome, F. L. (1909) Notes on some mining districts in Humboldt County,
Nevada: U.S. Geological Survey Bulletin 414.
Vanderburg, W. 0. (1936a) Placer mining in Nevada: Nevada Bureau of Mines
and Geology Bulletn 27.
(1936b) Reconaissance of mining districts in Pershing County,
Nevada: U.S. Bureau of Mines Information Circular 6902.
Wisker, A. L. (1908) Chafey, Nevada: Mining and scientific press, November
7, 1908, p. 625-628.
Sierra District - 3

LOCATION
SPRING CITY DISTRICT
The Spring City, or Paradise Valley mining district is located in
the hills about 8 miles northeast of the town of Paradise Valley,
northern Humboldt County. The major mining properties are located in
Sections 21, 22, 27, and 28, T43N, R40E, along the western crest of the
Red Hills, a southeast-trending range extending to the east from the main
Santa Rosa range. Most of the mines in the district are within the
boundaries of the Humboldt National Forest.
HISTORY
Lindgren (1915) gives the discovery date of the district as 1868,
and states that the district was organized in 1873. Thompson and West
(1881) describe the Mount Rose mining district, in the same location, as
being prospected in the 1860's: and being organized in 1871. Stamp mills
were constructed at Queen city on Martin Creek, about 5 miles to the
southeast of the mines, in 1874 to treat ores from the district. The
mines were most active between 1879 and 1891. Some work took place in
1907, 1915, and a small mill was constructed on Spring City Creek in the
early 1930's to treat tailings and new ore. Total recorded production for
the district, 1879 through 1912 (last year of recorded production) is
$1,545,362 in silver and gold (Couch and Carpenter, 1943). There has
been renewed activity in the district in the past few years, and several
large claim blocks cover most of the old district. There was, however, no
evidence of drilling or other exploration work seen at the time of our
examination (September, 1984).
GEOLOGIC SETTING
The area of the Spring City district is underlain by black phyllite
and dark knotted schist, probably of Jurassic-Triassic age. To the west
of the district, a large body of Tertiary granodiorite, possibly related
to the Santa Rosa pluton, cuts the older metamorphic rocks. An irregular-
shaped body of intrusive rhyolite(?) crops out to the east of the
mineralized area, forming a boundary between the older rocks and the
extensive volcanic flows of the Owyhee Plateau to the east. Rhyolite
dikes occur in the area of the mines parallel to some of the mineralized
veins.
ORE DEPOSITS
The mines in the Spring City district were developed on sulfide-
bearing quartz veins which follow wallrock foliation or shear zones. Two
general types of veins were seen during the examination of the district.
Large, very prominent white quartz veins crop out on the ridge just west
Spring City District - 1

of the old Spring City tovnsite. The largest vein strikes N80E, dips
30-40 degrees to the northeast and rolls along both strike and dip to
conEorm to cleavage planes in the knotted schist wallrock. Very old
workings along the outcrop of this vein indicate that it may be the site
of the original work in the district. The white outcrop of the vein on
the ridge can be seen Eor miles to the southwest and no doubt led
prospectors to the area. Several other parallel veins crop out nearby,
and a porphyritic rhyolite dike Eollows the trend of the vein on the
west. The massive white, bull-quartz veins carry some tetrahedrite but
appear to be only weakly mineralized-they were heavily prospected but not
extensively mined. These veins, in part, show brecciation and later
cementing with clear quartz possibly indicating a second period of
mineralization.
The second system of veins seen in the district are less prominent
in outcrop, follow north-south to NlOE strikes, but appear to have
carried better mineralization. The major mine in the district, the Silver
Butte (Paradise Mine, Wildgoose.Vein) follows a north-south shear zone
and has a kaolinized rhyolite dike on its east wall. Both the dike and
the vein strike almost perpendicular to wallrock foliation. This vein
contains pyrite and arsenopyrite in addition to tetrahedrite.
The close association of the vein mineralization with rhyolite dikes
may indicate that the ores at Spring City are associated with the
volcanic activity to the east rather than with the Santa Rosa range
intrusive rocks. The large, barren white quartz may be an early stage,
related to similar quartz veins in the Santa Rosa range. Brecciation of
these veins, later clear quartz cement, and precious metal-bearing
sulfides would be associated with the rhyolite plug cropping out east of
Spring City Creek.
GEOCHEMICAL RELATIONSHIPS
All of the ore samples collected in the main portion of the Spring
City district were very high in silver, and all contained detectable
gold. Three samples from the Bullion-Wildgoose vein system ranged from
6.8 ppm (.20 oz) to 54 ppm (1.57 oz) gold. The gold-silver values are
associated with high arsenic and antimony values and with lessor lead and
copper and low zinc values. Samples from this district contained
essentially no manganese and were very low in barium, both common to
other precious metal deposits in the state.
SELECTED REFERENCES
Couch, B.P., and Carpenter, J.A. (1943) Nevada's Metal and Mineral
Production: NBMG Bull. 38
Lincoln, F.C. (1923) Mining Districts and-Mineral Resources of Nevada:
Nevada Newsletter Publishing Co.
Lindgren, W. (1915) Geology and Mineral Deposits of the National
District, Nevada: USGS Bull. 601.
Spring City District - 2

Thompson, T.H., and West, A.A. (1881) History of Nevada: Howell-North,
Berkeley (1958).
Vanderburg, W.O. (1938) Reconnaissance of Mining Districts in Humboldt
County, Nevada: USBM IC 6995.
Spring City Dfrtrfct - 3

LOCATION
SPRING VALLEY DISTRICT
The Spring Valley district is located on the east flank of the
Humboldt Range, T28-29N,R34-35E. The district is accessible via Nevada
State Highway 400 and dirt roads extending from the highway:
HI STORY
The main lode mine in the district, the Bonanza King Mine, was
discovered in 1868. The mine was worked from 1868-85 then intermittently
until 1910. It has produced more than $50,000 in gold and silver. The
placer deposits in Spring Valley were discovered in 1875. Placer gold was
also discovered in American Canyon, South American Canyon, and Troy
Canyon. The placer deposits were fairly rich and were worked intensively
from 1880-90 by Chinese miners, who drifted along the alluvial-bedrock
contact from numerous shafts to mine high-grade pay streaks. The district
is estimated to have produced more than $10 million in gold making it the
most productive placer district in Nevada.
Cinnabar was found in the district in 1906. Three deposits, the
Kaolinite, King George and Hillside mines have produced about 500 flasks
of mercury. Two small lead-silver mines, the Pacific Matchless and the
Wabash Mine, are credited with producing a small amount of ore in the
1930's.
About 3000 tons of pinite (massive sericite) was mined as a
refractory from 1933-48 from a deposit in the Spring Valley district.
GEOLOGICAL SETTING
Rocks of the Lower Triassic Koipato Group, including the Limerick
Greenstone, Rochester and Weaver Rhyolites and rhyolite porphyry and
leucogranite intrusive rocks, crop out in the core of the district. The
Koipato Group rocks are overlain by the dominantly carbonate rocks of the
Prida and Natchez Pass Formations of Triassic age. A granodiorite stock
intrudes Rochester Rhyolite in Spring Valley Canyon. Diabase dikes and
sills intrude both rocks of the Koipato Group and the Prida and Natchez
Pass Formations. All of these rocks are unconformably overlain by Tertiary
basalt flows.
The Mesozoic rocks are folded into a north-trending anticline which
is cut by several major nor.th-trending faults including the Black Ridge
fault on the west side of the district and the Fitting fault on the east
side. The Fitting fault drops the Weaver Rhyolite and the Prida and
Natchez Pass Formations down against the Rochester Rhyolite.
ORE DEPOSITS
The Bonanza King nine is located on a northwest-trending, steeply
dipping vein in a diabase dike which intrudes Rochester Rhyolite (Johnson,
1977). The quartz-tourmaline vein is 3/4-1-2/3 m wide and contains pyrite,
Spring Valley District - 1

tetrahedrite, galena, sphalerite, chalcopyrite, covellite, chalcocite,
stephanite, acanthite and electrum.
The Pacific Matchless Mine is located on a quartz-tourmaline vein in
leucogranite. The vein trends northerly and contains barite, galena,
pyrite and chalcopyrite. The Wabash Mine explores a northerly-trending
brecciated fault zone in Rochester Rhyolite. The ore contains abundant
manganese oxide and galena and sphalerite.
The mercury deposits occur in carbonate rocks of the Natchez Pass
Formation, King George and Hillside mines, and in highly sericitized and
argillized Rochester Rhyolite, Kaolinite Mine. The ore at the Hillside and
King George mines occurs as coarsely crystalline cinnabar in calcite
veinlets which cut limestone. Minor native mercury, calomel and stibnite
occur with the ore. At the Kaolinite Mine, the mercury occurs as small
crystals and painty films, disseminated through the altered rhyolite.
The placer mines, from which the main production in the district was
derived, are located in Quaternary gravels which locally exceed 30 meters
in thickness. The gold occurred both in so called false bedrocks of clay,
overlain by gravel, and at the bedrock-gravel contact. The source of the
gold is apparently a number-of quartz-tourmaline veins and veinlets in
Koipato Group rocks on slack' Ridge and possibly from erosion of the veins
on Nenzel Hill in the Rochester district.
GEOCHEMISTRY
No samples taken.
SELECTED REFERENCES
Bailey, E. H., and Phoenix, D. A. (1944) Quicksilver deposits of Nevada:
Nevada University Bulletin, v. 38.
Johnson, M. G. (1977) Geology and mineral deposits of Pershing County,
Nevada: Nevada Bureau of Mines and Geology Bulletin 89.
Wallace, R. E., Tatlock, D. B., Silberling, N. J., and Irwin, W. P. (1969)
Geologic map of the Unionville Quadrangle, Pershing County, Nevada:
U.S. Geological Survey Map GQ820.
Spring Valley District - 2

LOCATION
STAGGS DISTRICT
The Staggs district is located in what are locally called the Lava
Bed Nountains in west-central Pershing County. The area designated a8
"Lava Beds" on the Lovelock 2' sheet is in fact entirely underlain by
granitic and minor metasedimenary rocks-there is no "lava" or volcanic
rock of any nature in the range. The Fortieth Parallel Survey described
these mountains as the Pahsupp Range (Ransome and Burchard, 1921). The
northern portion of the district is accessible by traveling south 8 miles
from Highway 549 beginning just east of the Pahsupp Mountain on the south
side of the Western Pacific track. Access is also possible by traveling
north of Highway 548 starting 4 miles west of Porter Spring in'the Seven
Troughs Range.
HISTORY
According to Stager (in prep) the Sage Hen Mine, located in the
central portion of the district, was first located for gold in 1914
without success and was relocated in 1949 for tungsten. Thereafter, the
mine operated intermittently until 1955. Tungsten was first reported in
the district by members of the U.S. Geological Survey in 1917. The
tungsten was in several prospects in the central portion of the district
but was too small to be economical and was apparently never mined. The
first ore reported from the district was shipped from the Hilltop prospect
in 1942 consisting of 20 tons of .75 WO (Johnson, 1977).
3
The Twin Buttes Mine, the biggest producer in the district, is
located in Sec. 1, T30N,R26E. The mine was discovered in the 1930's and
operated intermittently until 1980, with the biggest period of production
occurring between 1941-1943. Total production to date amounts to 625 oz
gold, 7557 oz silver and approximately 20 tons of lead.
The Garrett and Windy Hill mines, sections 19 and 21 respectively,
T32N,R27E, are in the northern part of the district about two miles apart
on the only road that crosses the range. The mines are not mentioned in
the references for Pershing County, although both have workings of
considerable size and the Windy Hill Kine appears to have had two distinct
periods of development. The first was an underground operation and the
upper portion of the old workings have been mined out by a more recent
open pit. On a second bench below the open pit an incline has been driven
using motorized equipment while much of the older workings were dug by
hand. Both of the mines have workings that exposed vein systems in shear
zones with quartz stringers and in some cases felsic dikes (?) hosted in
granodiori te.
GEOLOGICAL SETTING
The central portion of the district is a highland of deeply weathered
granodiorite and monzonite while the north and south ends of the range
consist of metasediments of Triassic and Jurassic age. Tertiary volcanic
sediments are exposed along the flanks of the metasediments that are
Staggs District - 1

themselves intruded by Quaternary basalts in the northeast part of the
district.
ORE DEPOSITS
Tvo general types of ore occurrences are present within the Staggs
district. Scheelite-bearing tactite deposits all associated with
metasediments of the Auld Lang Syne Formation of Triassic-Jurassic age and
granitic rocks of Cretaceous age. The second type of occurrence is limited
to veins in shears and fissures associated with quartz stringers and
felsic dikes. The veins are commonly brecciated, iron stained and oxidized.
GEOCHEMICAL RELATIONSHIPS
A sample from the east bearing quartz vein in the main adit of the
Twin Buttes Mine ran 39.0 ppm gold, 200 ppm silver with anomalous arsenic,
lead, zinc, and antimony, Mi-nor tungsten was lamped from prospects. Sample
results from the Garrett and Windy Hill mines were not available at this
time.
SELECTED REFERENCES
Johnson, M. G. (1977) Geology and Mineral Deposits of Pershing County,
Nevada: NBMG Bull. 89.
Ransom, F. L., and Burchard, E. F. (1921) Contributions to Economic
Geology: USGS Bull. 725D.
Stager, H. K. (in prep) Tungsten Deposits of Nevada: NBMG Bull.
Staggs District - 2

LOCATION
STAR DISTRICT
The Star district is located in the north end of the Humboldt Range
in Pershing County in T31 and 32N,R34E. It is accessible from Nevada
Highway 400 by dirt roads.
HISTORY
The Star district was organized in 1861 following the discovery of
silver ore in quartz veins in Star Canyon in 1860. The main mines were the
Queen of Sheba and the De Soto mines. High-grade ores containing as much
as $2500 per ton in precious metals led to the rapid growth of Star City
in the early 1860's. The refractory nature of the sulfide ore l.ed to the
precipitous decline in mining in the area by 1868. Mining resumed on a
limited scale in the 1870's.and continued intermittently into the present.
The Queen of Sheba Mine fa &edited with $5,000,000 in production,
principally silver.
The Bloody Canyon antimony property was discovered in 1868 and has
been worked intermittently from 1871 to the present. It is credited with
producing over 1218 tons of antimony metal making it one of the larger
producers of antimony ore in Nevada.
Some placer gold has been produced from Star Canyon and the Tehama
Mine in Tehama Canyon, reportedly was worked as a gold mine, although the
ore contains values predominantly in copper and silver.
GEOLOGIC SETTING
The oldest rocks exposed in the Star district are mafic flows,
breccias, tuff and clastic rocks of the Limerick Greenstone of early
Triassic age. It ia overlain by rhyolite tuffs and flows of the Rochester
Rhyolite. Both formations are part of the Koipato Group. The volcanic
rocks are overlain uncoaformably by clastic and carbonate rocks of the
Prida Formation which is in turn overlain by limestones of the Triassic,
Natchez Pass Formation. These units are cut by several NNE trending faults
which bound several large fault blocks.
ORE DEPOSITS
The main ore deposits .in the Star district are located in the upper
part of the Rochester Rhyolite and in the basal, clastic member of the
Prida Formation. The bonanza silver deposits of the Queen of Sheba and De
Soto mines occur in stockworka zones iwthe basal Prida Formation, which
connect with high-angle quartz veins in the underlying Rochester Rhyolite.
This relationship is so prevalent in the Humboldt Range that Silberling
and Wallace (1969) have suggested that the silver in the veins and
stockworks was remobilized from the rhyolites. This seems highly unlikely,
however, since a clear zonal pattern is present surrounding several
hydrothermal centers in the Humboldt Range. Quartz-scheelite-beryl-
Star District - 1

tourmaline veins occur in the center of the zonal pattern. These grade
outwards into scheelite-silver-base-metal veins, then into silverbase-metal
veins and finally into an outer halo OF antimony-mercury .
mineralization. The mineralization appears to be genetically related to
the emplacement of S-type gravites of late Cretaceous age.
The workings in the Queen of Sheba and De Soto mines follow the
contact between the Prida Formation and the Rochester Rhyolite and consist
of quartz sulfide stockworks and veins in both units. Most of the economic
mineralization occurred in the basal clastic unit of the Prida Formation.
Sulfides present in the vein material include pyrite, galena, sphlerite,
chalcopyrite, tetrahedrite and bornite. Johnson (1977) reports stibnite
and jamesonite, but neither mineral was seen during my examination of the
mines. A number of rotary holes, less than five years old have been
drilled in the vicinity of the Queen of Sheba and De Soto mines.
The American Basin Mine is located in S27,T31NsR34E, south of the
Queen of Sheba Mine. It also is located along the contact between the
Prida Formation and the Rochester Rhyolite. The mineralogy of the quartz
veins and stockworks is essentially the same as at the Queen of Sheba
Mine. There has been recent-drilling in the area between the American
Basin Mine and the De Soto h e
along the contact between the Prida
Formation and the Rochester Rhyolite.
The Tehama Mine in Tehama Canyon has been idle for many years. The
road to the mine is washed out and there is no sign of recent activity.
The mineralized zone occurs along the faulted contact between basal
clastics of the Prida gomation and the Rochester Rhyolite. The fault zone
trends NNE and dips 60 -~OONW. A zone of silicification and stockwork
veining occurs in the fault zone. Sulfide minerals present in the ore zone
include pyrite, chalcopyrite, tetrahedrite, and sphalerite. The
mineralization occurs predominantly in the rhyolite.
The Bloody Canyon Mine is located in the upper part of Bloody Canyon.
The main workings are located on a one meter wide quartz vein in Rochester
Rhyolite. The vein contains coarse-grained massive of bladed stibnite.
There is no evidence of recent activity in the area and the road was
impassible in the summer of 1984.
GEOCHEMISTRY
Samples from the Queen of Sheba, De Soto, and American Basin mines
were highly anomalous in silver (up to 3000 ppm Ag), copper, lead,
antimony, and zinc. They were anomalous in arsenic and gold. A sample from
the Queen of Sheba contained anomalous cadmium.
A sample of carbonaceous, pyritic limestone of the Prida Formation
from the Pflum Mine contained anomalous molybdenum, vanadium, strongly
anomalous zinc, lead, copper, barium, boron, silver, arsenic, and gold.
A sample from the Tehama Mine is highly anomalous in silver, arsenic,
barium, copper, and antimony and contains anomalous zinc, lead, and gold.
Samples from the Bloody Canyon Mine, as expected, contain abundant
antimony, but also are anomalous in arsenic, zinc, silver, copper, and
lead.
Star District - 2

SELECTED REFERENCES
Johnson, M. G. (1977) Geology and mineral deposits of Pershing County,
Nevada: Nevada Bureau of Mines and Geology Bulletin 89, p. 115.
Silberling, N. J., and Wallace, R. E. (1967) Geologic map of the Imlay
Quadrangle, Pershing County, Nevada: U.S. Geological Survey Map GQ 666.
Silberling, N. J., and Wallace, R. E. (1969) Stratigraphy of the Star Peak
Group (Triassic) and overlying lower Mesozoic rocks, Humboldt Range,
Nevada: U.S. Geological Survey Prof. Paper 592.
Star District - 3

LOCATION
SULPHUR DISTRICT
The Sulphur mining district is in the northwestern part of the Kamma
Mountains 2 to 5 miles southeast to northeast of the Union Pacific
railroad siding at Sulphur. The district is entirely in Humboldt County,
in the east half of T35N8R29E. It is easily accessible from a good gravel
road that connects Winnemucca and Gerlach.
HISTORY
The numerous sulfur deposits in the district have been known and
intermittently mined for many years. According to Adams (1904, p. 497)
sulfur was discovered about 1870 and was first mined in 1874. In 1882
about 6 tons of sulfur reportedly were being produced daily. In 1904 the
Nevada Sulfur Co. was operating two retorts to recover sulfur. Information
on activity is sketchy, but apparently the sulfur deposits were mined
intermittently until the early 1960's. In the earlier days the product was
hauled to a railroad siding at Humboldt House; with the completion of the
Western Pacific (now Union Pacific) line in 1911, the deposits were within
a few miles of a railroad. Vanderburg (1938, p. 44) estimated that roughly
40,000 tons of sulfur had been produced by open pit and underground
room-and-pillar methods. Extensive exploration drilling for sulfur in 1966
and a processing plant was built, but little or no sulfur was produced.
Some additional drilling for sulfur was done by Duval Corp. in 1974. In
1931 several hundred tons of alunite was mined from vein deposits in the
district and sold as a soil additive. (Fulton and Smith, 1932, Nevada
Bureau of Mines and Geology file manuscript). Starting in 1941 small
quantities of mercury were recovered from sulfur-bearing ore; Bailey and
Phoenix (1944, p. 108) reported production of 25 flasks through 1943.
According to Vanderburg (1938, p. 44, 47) a silver deposit was
discovered in 1908 at the southwestern end of the district. The principal
property, the Silver Camel Mine, was reported to have produced $100,000 in
high-grade silver ore between 1908 and about 1912.
A gold deposit was discovered at the northern end of the district by
Homestake Mining Co. in the early 1980's and was developed by the Standard
Slag Co. as the Lewis Mine in 1984.
GEOLOGIC SETTING
The district is along the northwestern edge of the Kamma Mountains,
extending 3 miles north-northeast from the Humboldt-Pershing County line
to the Winnemucca-Gerlach road. The district is essentially confined
between two north-northeast trending major faults: the western one
separates Recent sediments of the Black Rock Desert on the west from
Tertiary sedimentary rocks; the eastern on-bout 7000 feet to the
east-southeast-separates the Tertiary sedlrnentary rocks from a sequence of
rhyoltttc to latitic volcanic rocks of somewhat older age. Essentially all
the mineralizatlon-the sulfur, alunite, silver, and gold-is in the block
Sulphur District - 1

of Tertiary sedimentary rocks, although some prospecting has been done in
the volcanic rocks to the east.
The Tertiary sedimentary rocks appear to be predominantly
conglomerates with some sandstones. Some lacustrine tuffaceous sediments
are also present, but the pervasive alteration in the district makes
quantitative estimation impossible. The rocks usually have dips of less
than lo0, mostly eastward.
Two distinct types of hydrothermal alteration are present in the
district. The areally most extensive and the most conspicuous type is a
leached, opalized, argillized, and alunitized rock that contains the
sulfur deposits. This material probably was formed in the upper,
near-surface part of a hot-springs system where sulfuric acid was
abundant. The other type is a pervasive silicification-pyritization that
probably developed lower in the system below the watertable. This material
is the host for the silver deposits and, at least in part, for the gold
deposit.
Two other major faults, also with north-northeast strike but with
less vertical offset, are present in the district.
ORE DEPOSITS
The ore deposits are described in three parts: the high-grade silver
ore; the sulfur-mercury and the alunite ores; and the lorgrade gold ore.
The high-grade silver ore, mined mostly in the Silver Camel Mine,
occurs in the south-central part of Section 34 west- and southwest of
Devils Corral, a prominent, highly colored topographic basin. Almost all
the data on this deposit is from Vanderburg (1938, p. 47). Development
consists of a number of trenches and shafts, the deepest 95 feet. The
silver occurs as cerargyrite in east-west or northwest-southeast seams a
fraction of an inch to 4 inches wide in silicified conglomerate. Minable
material was not found more than 20 feet below the surface; a
300-foot-long adit at greater depth did not penetrate ore.
The sulfur-bearing material occurs in two general areas: one a zone
that extends from the vicinity of Devils Corral north-northeast for about
6000 feet in the ~12~12 S34, the ~12~12 S35, and the SW/4 S26; and a much
smaller area in the SW/4 S25. In the first area sulfur has been mined in
about a dozen open pits (including the Mercury and East China pits) and,
to a lesser extent, in underground workings. Sulfur generally does not
appear to be present in any quantity on the surface outside of these pits.
In the pit areas the rocks are mostly altered, and now are light colored,
leached, and brecciated in places. They consist mostly of opal,
chalcedony, quartz and kaolin, but alunite, gypsum, anhydrite,
pyrophyllite(?), iron oxides, and jarosite have been recognized. The
sulfur occurs as disseminated grains, preferential replacement of
conglomerate matrix, irregular veins and masses, and coatings on fracture
surfaces. In the present exposures, sulfur is present in occasional areas
up to about 25 feet across where it makes up as much as one-third by
volume. The rock between such areas contains essentially no sulfur. In a
few places sulfur bodies appear to have horizontal elongation or are
beneath a siliceous cap. The average grade mined in the past is said to be
15 to 38% S, but very little such material is now exposed. Finely
crystalline cinnabar is sparsely present, mostly as coatings.
Sulphur District - 2

At the second area, in the SW/4 S25, some of the sulfur occurs as
described above. The Peterson open pit, however, is along the fault zone
that separates the Tertiary sedimentary rocks from the older volcanic
rocks. In this pit the sulfur occurs on fracture surfaces and impregnates
altered rock in the vicinity of a sinuous shear zone. In the central part
of the pit, this zone strikes ~50'~ and dips 75'~~. The sulfur-bearing
zone is estimated to be up to 20 feet wide and to contain as much as 20% S.
Alunite veins are present in several places, mostly on the east and
west edges of the largest sulfur-bearing zone. The veins generally have
northerly strike and steep dip, and they range from 2 feet to 20 feet in
width. The fine-grained alunite contains some opal and is most pure in the
thinner veins.
The Lewis gold mine is at the north end of the district, probably in
the SE/4 S23. The host rock is conglomerate which is, at least in part,
silicified and pyritized. Chalcedony veinlets are abundant in the eastern
part of the area. Some of the flat-lying beds apparently had preferential
replacement by gold.
An unpublished report by Homestake reported that 30 samples taken
over an east-west distance of 2000 feet contained 0.04 to 0.099 oz/gold
and traces of silver. Initially the heap-leach operation, using
run-of-mine ore, was at a rate of 5000 tonslday. Reportedly reserves are
more than 10 million tons; the grade probably in about 0.03 gold.
GEOCHEMISTRY
Eleven geochemical samples were taken in the district; all were of
the highly altered materials associated with sulfur. All samples appear to
be anomalous in barium with values ranging from 500 to 2000 ppm. A sample
of sulfur-bearing material from the Mercury pit contained anomalous
quantities of lanthanum, lead, and vanadium. One sample from the Peterson
pit contained an anomalous amount of silver; another sample contained a
slightly anomalous amount of lanthanum. Another sample from the district
(No. 1794) contained more than usual amounts of antimony and lead.
SELECTED REFERENCES
Adams, G. I. (1904) The Rabbit Hole sulfur mines, near Humboldt House,
Nevada: U.S. Geological Survey Bull. 225-M, p. 497-500.
Bailey, E. H., and Phoenix, D. A. (1944) Quicksilver deposits in Nevada:
Nevada Bureau of Mines and Geology Bull. 41.
Vanderburg, W. 0. (1938) Reconnaissance of mining districts in Humboldt
County, Nevada: U.S. Bureau of Mines Information Circular 6995.
Sulphur District - 3

LOCATION
TABLE MOUNTAIN DISTRICT
The Table Mountain mining district is located in the northern
Stillvater Range in southeastern Pershing County and adjacent northeastern
Churchill County. Table Mountain is located in the central part of the
district. The mines and prospects occur on both sides of the mountain
range. The district has also been called the Bolivia, Boyer, or Cottonvood
Canyon district formines in the vicinity of the old mining camp of
Bolivia in Cottonwood Canyon about 5 km northeast of the Boyer Ranch in
northern Dixie Valley. The Table Mountain district, however, is more
inclusive than these other districts. The Copper Kettle district lies in
the Stillwater Range to the south of the Table Mountain district in
Churchill County. It has sometimes been included in the Table Mountain
district. The Mineral Basin district lies in the Buena Vista Bills to the
west of the Table Mountain district. The Corral Canyon district is located
to the southeast of the Table Mountain district; this district has been
included within the Table Mountain district by earlier workers (Ferguson,
1939, p. 18-19; Beal, 1963, p. 8-11) but is considered separate from it by
Willden and Speed (1974, p. 64).
HISTORY
Alva Boyer discovered copper ore in the district and several wagon
trains of it were hauled to Sacramento in 1861. The silver-lead deposits
of Cornish Camp on the west side of the mountain range were worked in the
early 1870's (Lincoln, 1923, p. 11). Gilbert's Mine (probably the Linda-Jo
Mine) was discovered in 1878, and antimony was shipped from the Fencemaker
Mine in the 1880's. Nickel and cobalt deposits were discovered in the
early 1880's. Gold was reportedly discovered in the Table Mountain
district in 1922 (Lincoln, 1923, p. 11) and Johnson (1977, p. 94) reports
that the Green Gold Mine was worked intermittently from the 1930's to the
1960's.
Mercury deposits in the northwest part of the district, near the
border of the range, were discovered mainly in the 1940's and worked
through the 1950's (Bailey and others, 1984). There has been only sporadic
exploration and mining activity in the Table Mountain district during the
last 25 years. Some drilling, probably for precious metals, was done
recently in the vicinity of the Freckles mercury mine.
Although there has been intermittent mining activity for over 120
years in the district, production from the mines has been limited. Copper
ore was produced from the Boyer copper district in the early days, and the
mine was active until at least 1911. The Fencemaker antimony mine produced
one ton of antimony metal, and the Lovelock Mine shipped about 500 tons of
high-grade nickel-cobalt ore (Lincoln, -1923, p. 11). The Green Gold Mine
Is known to have produced from the 1930's to the early 1960's; in 1948-49,
the mine produced 120 tons of ore milled for the free gold values
(Johnson, 1977, p. 94). The Freckles Mine has produced 1236 flasks of
mercury (Bailey and others, 1984). About 900 tons of fluorspar ore is
estimated to have been produced from the Nevada Fluorspar Mine (Papke,
1979, p. 64). The Gilbert Mine produced $30,000 in silverlead ore from
Table Mountain District - 1

shallow workings after 1878 (Lincoln, 1923, p. 11). An unknown amount of
ore was produced from the Cornish Camp area west of Cornish Peak, and a
few thousand tons of ceramic clay has been produced from the Stoker Kaolin
deposit .
GEOLOGIC SETTING
The rocks exposed in the portion of the Stillwater Range included in
the Table Mountain district include a variety of Mesozoic metasedimentary
and metavolcanic units. The lithologies of these rocks include limestone,
shale, sandstone, and mafic metavolcanic rocks. These Mesozoic units have
been intruded by Jurassic gabbro and Late Cretaceous quartz monzonite.
Table Mountain, at the crest of the range, consists of a large plateau of
Cenozoic basalt. The rocks are cut by numerous north- and northeast-
trending high-angle normal faults (Johnson, 1977; Willden and Speed, 1974;
Wallace and others, 1969).
ORE DEPOSITS
The numerous properties of the Table Mountain district have been
described in a number of reports. The following section is an attempt to
summarize those descriptions. Early work in the district is described by
Lincoln (1923, p. 11-12), Ransome (1909) and Vanderburg. Johnson (1977)
and Willden and Speed (1974) summarize the deposits-in the district.
Bailey and Phoenix (1944) and Bailey and others (1984) describe the
mercury deposits, Lawrence (1963) describes the antimony mine, and Papke
reports on the fluorspar deposits.
Mercury properties are reported from the vicinity of Red Hill and
Fencemaker Canyon in the northwest part of the district and from near the
eastern range front in the vicinity of Boyer Ranch. The Freckles Mine, the
main mercury producer in the district, is located about 2 km north of Red
Hill, on the Kitten Springs Road. At the mine, cinnabar occurs with white
calcite in veinlets in irregular fault zones and as powdery material mixed
with iron oxides that cement breccia. The wallrock is gray limestone and
olive siltstone of the Mesozoic Auld Lang Syne Group (Bailey and others,
1984; Johnson, 1977). The main mineralized zone trends ~65'~. Limestone
fault breccia is locally silicified. At the Black Dyke prosgect in
Sll ,T25N,R35ES cinnabar, sulfur, and opal occur along a N50 E, 60°-700~'W
fault zone. The wallrocks, Mesozoic shale and granite, are strongly acid
leached. Other mercury prospects in the vicinity of Fencemaker Canyon and
Red Hill also are generally in Mesozoic limestone and siltstone, and
consist of silicified and bleached areas with spotty cinnabar. At Senator
Fumaroles in S32?,T25NsR37E, cinnabar, sulfur, and pyrite occur in highly
silicified rock. Some acid leaching has occurred, especially near active
fumarole vents. There are no flowing hot springs at the surface, and the
cinnabar was probably deposited from a vapor phase (Lawrence, 1971).
The Fencemaker Mine is located in S3lsT26N,R37E. Stibnite, sparse
cinnabar, and antimony oxide minerals occur in fractured Triassic(?)
limestone along a diabase dike. The dike is 30-70 cm wide, trends ~60'~
and dips 3 5 ' ~ (Lavrence, ~ 1963, p. 192-193; Bailey and others, 1984).
Table Mountain District - 2

There are two fluorspar properties in the northwestern part of the
Table Mountain district, the Nevada Fluorspar Mine (S1,T25NPR35E) and the
Suzie prospect (S17 and l8,T26NPR37E). Fluorite occurs in replacement
bodies and veins in Mesozoic limestone, shale and conglomerate. Abundant
iron oxide minerals (derived from sulfides), siliciffcation, and
argillization are associated with the fluorite mineralization.
The Stoker kaolin deposit is located in the vicinity of New York
Canyon (Vanderburg, 1940, p. 48). The deposit is a large, nearly
flat-lying body of kaolin formed by hydrothermal alteration of sedimentary
rocks, principallly shales of probable Triassic or Jurassic age. Minor
cinnabar and sulfur occur, and steam was encountered in several drill
holes. The deposit occurs near a major range-front fault.
Bedded gypsum of probable Jurassic age is exposed in the first canyon
north of Hughes Canyon, in S27,T25NnR35E. The property has been called the
Corn Beef Gypsum. The maximum vertical exposure is about 10 m, but the
gypsum bed in probably thicker than that. Scattered exposures are present
for about 0.5 kn along the strike of the bed.
There is little information in the literature concerning the
silver-lead deposits at Cornish Camp, presumably in the vicinity of
Cornish Canyon. Lincoln (1923,~. 11) reports production in the early
1870's. At one property in S22,T25NSR35E a quartz vein up to 2 m wide
contains galena, some cerrussite, and oxidized pyrite. The vein is
strong18 brecciated, has locally abundant gossan, and has an attitude of
~30'-40 W, 15OsW. The wallrock is Mesozoic limestsone and shale.
The Green Gold Mine, near the mouth of New York Canyon, is reportedly
on a quartz-sphalerite-pyrite vein (Johnson, 1977, p. 94). The vein is
about 30 cm wide and parallels bedding of the Mesozoic phyllite and
hornfels. The vein attitude is N~O'E, 30'~~. According to Steve Luddington
of the U.S. Geological Survey, the vein contains sparse yellow scheelite.
Johnson (1977, p. 94) reports that the Dixie property in
S33,T26NPR37E has been prospected for tungsten and silver, but has no
recorded production.
Gilberts Mine on the east side of the Stillwater Range may be the
Linda-Jo Mine described by Lincoln (1923, p. 11) as a silver-lead mine
discovered by Charles Gilbert about 1878. The Linda Jo produced $30,000 in
the late 1800's from shallow workings.
Nickel and cobalt concentrations occur in Cottonwood Canyon in a
sheared contact between fine-grained gabbro and albitized Jurassic
arenite. The ore minerals reported from the Lovelock and Nickel mines
include arsenides and sulfarsenides of nickel (with their alteration
products chloanthite and annabergite) as well as tetrahedrite, erythrite
(cobalt bloom), and azurite. The deposits are sumarized in Wilden and
Speed (1974, p. 84) and are also described by Ransome (1909, p. 54-58),
Vanderburg (1940, p. 46), and Ferguson (1939, p. 12). Garside (1973, p.
18) reports that pitchblende is present in the ore in amounts to several
tenths of a percent.
The Boyer copper deposit is reported to include several copper
properties at the head of a canyon to the south of Cottonwood Canyon. This
group of properties includes the Treasure Box Mine in NE/~ S7 ,T24NPR36E.
The copper occurs as concentrations of chalcopyrite and other copper
sulfides in fine fractures and ae amygdule fillings in Jurassic mafic
metavolcanic rocke (Carpenter, 1911, p. 804-805; Vanderburg, 1940, p.
Table Mountain District - 3

47-48). In addition to chalcopyrite, chalcocite, bornite, tenorite,
cuprite, malachite, and azurite also occur. The mineralization occurs in a
bed of andesite about 30 m thick, which dips at about 20' northwest.
Carpenter (1911) reports up to 0.05 oz of gold and 5 oz of silver per ton
of ore.
SELECTED REFERENCES
Bailey, E. H., and others (1984) Quicksilver deposits of Nevada:
Unpublished manuscript, Nevada Bureau of Mines and Geology.
Bailey, E. H., and Phoenix, D. A. (1944) Quicksilver deposits in Nevada:
Nevada Bureau of Mines and Geology Bulletin 41.
Carpenter, A. 8. (1911) Boyer copper deposits, Nevada: Mining and
Scientific Press, v. 103, p. 804-805.
Ferguson, H. G. (1939) Nickel deposits in Cottonwood Canyon, Churchill
County, Nevada: Nevada Bureau of Mines and Geology Bulletin 32.
Garside, L. J. (1973) Radioactive mineral occurrences in Nevada: Nevada
Bureau of Mines and Geology Bulletin 81.
Johnson, M. G. (1977) Geology and mineral deposits of Pershing County,
Nevada: Nevada Bureau of Mines and Geology Bulletin 89.
Lawrence, E. F. (1963) Antimony deposits of Nevada: Nevada Bureau of Mines
and Geology Bulletin 61.
(1971) Mercury mineralization at the Senator Fumaroles, Dixie
Valley, Nevada labs.]: Geological Society of America Abstracts with
Programs, v. 3, no. 2, p. 147.
Lincoln, F. C. (1923) Mining districts and mineral resources of Nevada:
Nevada Newsletter Publishing Co., Reno, Nevada.
Papke, K. G. (1979) Fluorspar in Nevada: Nevada Bureau of Mines and
Geology Bulletin 93.
Ransome, F. L. (1909) Notes on some mining districts in Humboldt County,
Nevada: U.S. Geological Survey Bulletin 414.
Schrader, F. C. (1947) Carson Sink area, Nevada: U.S. Geological Survey
Open-file Report.
Vanderburg, W. 0. (1940) Reconnaissance of mining districts in Churchill
County, Nevada: U.S. Bureau of Mines. Information Circular 7093.
Table Mountain District - 4

Wallace, R. E., Silberling, N. J., Irwin, W. P., and Tatlock, D. B. (1969)
Geologic map of the Buffalo Mountain quadrangle.
Willden, Ronald, and Speed, R. C. (1974) Geology and mineral deposits of
Churchill County, Nevada: Nevada Bureau of Mines and Geology Bulletin
83.
Table Mountain District - 5

LOCATION
TEN MILE DISTRICT
The Ten Mile mining district is located in the Krum Hills and Ten
Mile Hills west of Winnemucca. For convenience, the mines and prospects on
Blue Mountain are also included in the district. The Barrett Springs
mining district in the vicinity of Barrett Springs, is included within the
Ten Mile district in this report. The Winnemucca mining district adjoins
the Ten Mile district to the east and is restricted in this report to
properties on Winnemucca Mountain. The Barrett Springs district has been
in the past considered part of the Winnemucca district (Vanderburg, 1938,
p. 51). The Central Mining district lies to the southwest of Blue
Mountain, and prospects on the west side of Blue Mountain have also been
considered a part of that district.
HISTORY
There is little information available concerning any prospecting
activity in the late 1800'~~ as there was in the nearby Winnemucca
district. Shortly after 1900 the Nebraska Laurel Co. was formed to exploit
narrow high-grade precious metal veins near the present site of the Pansy
Lee (West Coast) Mine. In 1910 small scale production was started.
However, work was soon halted, and only minor prospecting and leasing was
done in the area until 1937 when West Coast Mines was organized to mine at
the Pansy Lee Mine (Grimm, 1942). The property produced several thousand
ounces of gold, several hundred thousand ounces of silver, as well as
copper and over 1 million pounds of lead. The property was operated
intermittently after the early 1940ts, but there is no record of this
production (Willden, 1964, table 9).
The first locations in the vicinity of Barrett Springs were made in
1906, but there was little activity until 1910, when C. E. Carpenter
discovered high-grade gold. The discovery created considerable excitement
and the camp (probably Laurel) soon had a population of several hundred
people. In 1911 it was found that the principal claims were on patented
railroad land, and mining activity came to a standstill until the land was
purchased from the railroad (Vanderburg, 1938, p. 51). The community of
Laurel had a U.S. Post Office from 1911 to 1913.
There is little information on any activity in the Ten Mile district
from the 1940's to 1983. In 1983 some underground work was done at the Ten
Mile Mine as well as surface mining and gravity concentration of gold at
the Golden Amethyst Mine (Jones, 1983, p. 32). Bulldozer exploration work
was conducted on claims on the west flank of Blue Mountain in 1984 (Tim
Percival, oral communication, 1985).
GEOLOGIC SETTING
Mudstone, siltstone, sandstone, and carbonate rock of the Triassic
and Jurassic Auld Lang Syne Group make up many of the exposures in the
Krum Hills, Ten Mile Hills, and Blue Mountain. These rocks have been
subdivided into units of more local usage (see Willden, 1964, pl. 1). A
Ten Mile District - 1

thrust fault separates two of these units on Blue Mountain. Mesozoic(?)
intrusive rocks locally cut these sedimentary units; a gabbro is exposed
on the south side of Blue Mountain, a smaller body of granodiorite is
present in the northern Krum Hills (Willden, 1964, p. 90) and quartz
diorite or granodiorite is reported from the vicinity of the Pansy Lee
Mine (Grimm, 1942), the Barrett Springs Mine, and the Ten Mile Mine.
The Mesozoic sedimentary rocks are unconformably overlain in the
northern Krum Hills by the Pansy Lee Conglomerate of Cretaceous and
Tertiary Age. Tertiary tuff, tuffaceous shale, and pebble conglomerate
overlie Mesozoic sedimentary rocks in the eastern Krum Hills, and Tertiary
olivine basalt flows overlie the previously described units on the eastern
flank of Blue Mountain and the northeastern part of the Krum Hills
(Willden, 1964, p. 91 and pl. 1).
ORE DEPOSITS
Most of the mines and prospects in the Ten Mile district are
associated with high-angle, northerly-trending quartz veins which cut
siltstone and quartzite of the Mesozic Auld Lang Syne Group (see Collier,
1958). Some of the veins are within or closely associated with small
granodiorite to gabbro intrusive bodies. Gold and silver are the main
comodities sought at nearly all of the properties in the district;
however, the unoxidized vein matter at some of the mines contains several
sulfide minerals, including pyrite, arsenopyrite, chalcopyrite,
sphalerite, tetrahedrite, and galena.
ThePansy Lee Mine, the major producer in the district, has also been
called the West Coast Mine. The workings are in Mesozoic quartzite and
phyllite, which is intruded by a small mass of quartz diorite.
Discontinuous quartz veins occur in northerly-trending shear zones; the
quartz veins contain calcite, arsenopyrite, pyrite, sphalerite,
tetrahedrite, jamesonite, chalcopyrite, galena, stibnite, and ngtive goid
(Grimm, 1942; Lawrence, 1963, p. 83). The main vein strikes N20 E to N5 W,
dips 65' east, and averages 43 cm in width. Assays of veins typically
range from 0.2 to 0.6 oz of gold per ton and from 8 to 40 oz silver per
ton (Willden, 1964, table 9).
The Nevada Consolidated Mine is located 0.5 km south of the Pansy Lee
Mine (Willden, 1964, table 9). Mineralization at the Nevada Consolidated
is reported to be similar, but the quartz veins are narrower and of
somewhat lower grade. At the Barrett Springs Mine (probably Sl4,T36N,R36E)
southwest of the Pansy Lee Mine, quartz veins and stockworks occur along
shear zones in shale, siltstone, and granodiorite. Values are reported in
gold, silver, and lead (Willden, 1964, table 9).
The mines at the southern end of the Ten Mile Hills include the
Tenmile Mine, Golden Amythest Mine, and, located between them, the
Eldorado Mine. Milky quartz veins at the mines generally trend northeast
and contain limonite (as boxworks and massive clots) as well as free gold.
The workings are often shallow, and no sulfide minerals are observed. The
veins are locally drusy and cut quartzite, phyllite, and hornfels of the
Auld Lang Syne Group as well as granodiorite. Gold, as flakes up to 2 mm
in diameter, occurs on iron- and manganese-stained terminated quartz
crystals in druses in the quartz vein matter at the Golden Amythest ~ine.
Supergene factors may be important in the concentration of this gold.
Ten Mile District - 2

The Atlas Mine, located at the south end of Blue Mountain, has gold
and silver values in narrow east-west-trending quartz veins which cut
green shaly sandstone and light-green to light gray phyllitic shale
(Willden, 1964, table 9; Collier, 1958).
A prospect on Blue Mountain in S23 and 24,T36N,R34E is reported to
have quartz veins with arsenopyrite and barite (Collier, 1958). In
addition, quartz stockworks occur in a hydrothermally altered area which
is presently being explored Eor precious metals. The alteration includes
silicification and acid sulfate alteration. The siltstone units oE the
Auld Lang Syne are argillized, and sulfur and gypsum are reported (Tim
Percival, oral communication, 1985).
SELECTED REFERENCES
Collier, J. T. (1958) Areal economic geology, T36N,R35 and 36E, Nevada:
Southern Pacific Co. unpublished geologic map.
Ferguson, H. G., Mullet, S. W., and Roberts, R. J. (1951) Geologic map of
the Winnemucca quadrangle, Nevada: U.S. Geological Survey Map GQ-11.
Grimm, K. E. (1942) The paragenesis oE the West Coast Mines ore body,
Nevada: Unpublished M.S. thesis, Stanford University.
Jones, R. B. (1983) Directory of Nevada mine operations active during
1983, in The Nevada Mineral Industry: Nevada Bureau of Mines and
~ e o l o ~ ~ ~ ~ Publicat e c i a ion l MI-1983, p. 27-39.
Lawrence, E. F. (1963) Antimony deposits of Nevada: Nevada Bureau of Mines
and Geology Bulletin 61.
Lindgren, Waldemar (1915) Geology and mineral deposits of the National
mining district, Nevada: U.S. Geological Survey Bulletin 601.
Vanderburg, W. 0. (1938) Reconnaissance of mining districts in Humboldt
County, Nevada: U.S. Bureau of Mines Information Circular 6995.
Willden, Ronald (1964) Geology and mineral deposits of Humboldt County,
Nevada: Nevada Bureau of Mines and Geology Bulletin 59.
Ten Mile District - 3

LOCATION
TOBIN ANTI SONOMA RANGE MINING AREA
The Tobin and Sonoma Range mining area encompasses the northern end
of the Tobin Range and the southern end of the Sonoma Range. It includes a
few mines and prospects which are not part of any organized mining
district. The area is bounded on the northeast by the Iron Hat district
and on the north by the Black Diablo and Washiki districts (Johnson, 1977,
pl. 2). It lies entirely to the north of Mount Tobin.
HISTORY
The Big Mike deposit was first discovered during the l93Ofs, but was
not productive until 1967 when a leaching plant was installed. In 1969
Cerro Corp. discovered a high-grade copper sulfide ore body. Ranchers
Exploration and Development Company made an agreement with Cerro, and
mined the deposit in 1970. A leaching facility for lorgrade ore operated
from 1970 to 1978. The property has been inactive since then (Rye and
others, 1984). The production consisted of 95,000 tons of high-grade,
direct-shipping ore and 675,000 tons of lorgrade oxide-sulfide ore
(Intermountain Paydirt, October 1984).
The Horton mercury mine was first located in the l95Ofs, but was
chiefly productive in 1967-1969. It is credited with about 500 flasks of
production (Bailey and others, 1984). Manganese properties in Pollard
Canyon are reported to have produced in excess of 600 tons of ore. This
production was from an open pit operated in 1951 and 1953 on the Blackbird
claim (Trengrove, 1959, p. 36). The True American Mine was operated during
World War 11 and the Korean War. Total production of scheelite is unknown,
but was probably about LOO tons (Johnson, 1977, p. 96). The Bari barite
claims were located in Pollard Canyon in 1973 (Papke, 1984, p. 120).
GEOLOGIC SETTING
The area included within the Tobin and Sonoma Range mining area is
underlain almost entirely by Pennsylvanian and Permian Pumpernickel and
Havallah Formations. These formations are often combined into the Havallah
sequence. The lithology of the sequence is greenstone, chert, argillite,
sandstone and limestone; these rocks are considered to be deep water
oceanic or marginal sea deposits. A small part of the Tobin and Sonoma
Range area is underlain by Triassic units, predominantly Koipato Group
volcanic and volcaniclastic rocks. Jurassic granodiorite intrudes the
Havallah sequence rocks in the northern Tobin Range.
.
ORE DEPOSITS
The ore deposits of the Tobin and Sonoma Range mining area are all in
the Pennsylvanian-Permian Havallah sequence, and are rather widely
dispersed in this unorganized mining area.
Tobin and Sonoma Range Mining Area - 1

The Horton mercury mine is located in the hills just south of the
mouth of Sheep Ranch Canyon in S2O8T32N,R39E. The main working are in the
vicinity of a ~ 3 5 ' 65O-75O~~
~ ~ shear zone in greenstone of the
Pumpernickel Formation. Ore (cinnabar) is found in the shear zone in
breccia zones, as replacements of maftc minerals in greenstone, as
complete rock replacements, or associated with calcite or quartz veinlets
(Bailey and others, 1984). The mineralized zone is argillized, as is a
considerable volume of rocks in the surrounding area. Limonite gossan
commonly occurs with the ore, and sparse pyrite is present in unoxidized
portions of ore and wallrock. Intense silictfication of greenstone occurs
locally, outside the main area of mineralization.
The Big Mike Mine, in S23,T31N8R39E, is an open pit mine on a
high-grade, low tonnage, cupriferous pyrite volcanogenic massive sulfide
deposit. The deposit occurs in the Havallah sequence, as a massive lens
entirely within a thin, cherty, carbonaceous argillite. A stringer zone of
sulfide minerals occurs in the footwall pillow basalt and a minor stringer
zone occurs in hanging wall pillow basalt (Rye and others, 1984). The
massive ore consists of pyrite and chalcopyrite with a little sphalerite.
Quartz constitutes less than 10% of the ore, except near the top and
bottom of the ore lens, where hydrothermal chert and jasper occur. Also
reported from the sulfide ore are bornite and digenite; cuprite and
tenorite are present in the oxide zone (Johnson, 1977, p. 95).
Three separate mines or mineral occurrences are located in the
vicinty of Pollard Canyon, on the west side of the north end of the Tobin
Range.
The Pollard Canyon manganese properties are located near the head of
Pollard Canyon (one prospect is in S3OnT31N,R40E). Black manganese
minerals occur as massive ore as mixed with fine-grained chalcedony in
beds which are interbedded with light gray chert and shale. The bedded
manganese deposits are small, commonly about 1 m thick, 10 m wide and
10-60 m long (Trengrove, 1959, p. 35, 36; Iverson and Holmes, 1954).
Pyrolusite, psilomelane, and braunite have been identified in the ore.
Within 1 m of the manganese bed (both above and below), red chert (jasper)
bands occur within the gray chert. Lorgrade manganese ore reportedly
occurs along faults where surface supergene enrichment has concentrated
manganese oxides (Johnson, 1977, p. 95).
The Bari barite property in Pollard Canyon is located in
S31,T31NBR40E. Barite is poorly exposed in two trenches; the host rock is
Pumpernickel Formation. The barite is whtte and coarse grained and
probably occurs as a vein (Papke, 1984, p. 120).
A mercury prospect is reported from 530 or 3l8T31N,R40E in Pollard
Canyon. The claims were staked in the late 195OPs, but no details of the
mineralization are available. The wall rock is Pumpernickel Formation
(Bailey and others, 1984).
The True American Mine is located on the west flank of the Tobin
Range, approximately in S27 and 34,T30NnR40E. Scheelite occurs in quartz
veins along the bedding planes of thin lenses of silicified limestone in
shale near the contact with a granodio~ite pluton (Johnson, 1977, p. 96).
Tobin and Sonoma Range Mining Area - 2

SELECTED REFERENCES
Bailey, E. H., and others (1984) Quicksilver in Nevada: unpublished
manuscript, Nevada Bureau of Mines and Geology.
Iverson, H. G., and Holmes, D. T. (1954) Concentration of oxide and
silicate manganese ores from the vicinity of Winnemucca, Pershing
County, Nevada: U. S. Bureau of Mines Report of Investigation 5022.
Johnson, M. G. (1977) Geology and mineral deposits of Pershing County,
Nevada: Nevada Bureau of Mines and Geology Bulletin 89.
Papke, K. G. (1984) Barite in Nevada: Nevada Bureau of Mines and Geology
Bulletin 98.
Rye, R. O., Roberts, R. J., Snyder, W. S., Lahusen, G. L., and Motica,
J. E. (1984) Textural and stable isotope studies of the Big Mike
cupriferous volcanogenic massive sulfide deposit, Pershing County,
Nevada: Economic Geology, v. 79, p. 124-140.
Trengrove, R. R. (1959) Reconnaissance of Nevada manganese deposits: U. S.
Bureau of Mines Report of Investigations 5446.
Tobin and Sonoma Range Mining Area - 3

LOCATION
TOY DISTRICT
The Toy, or Browns, mining district is located about 17 miles
southwest of the town of Lovelock in the eastern part of the Trinity
Range. The district is in the northwest corner of Churchill County, near
the Pershing County border. The St. Anthony Mine, the principal mine, is
located in Section 34, T25N,R29E in the center of the district. In this
report, the Toy district includes only those mines and prospects
associated with the St. Anthony stock. The deposits in the St. Anthony
area are sometimes placed into the Jessup district to the southwest or
into the Ragged Top district to the north. These districts are considered
separate and distinct from Toy and each will be separately described.
HI STORY
As related in Vanderburg (1940), the first mineral locations in the
district were made in 1885 for gold and silver but no mining resulted from
this early activity. In 1907 two Lovelock residents staked more claims for
gold and in 1908, while prospecting their claims by panning, they found a
heavy white mineral to be present in their concentrates. The mineral was
determined to be the tungsten mineral scheelite, the first occurrence of
tungsten to be found in a contact metamorphic deposit in the United
States. This discovery led to the discovery of other important contact
deposits such as those at Mill City in Pershing County, Nevada, and at
Tungsten Hills and Pine Creek in California.
The claims at Toy were patented, but little work was done until the
tungsten price began to rise in anticipation of World War I in 1915. A
mill was built on the property and tungsten was produced during 1916, 1917
and part of 1918 when the tungsten price dropped and operations ceased.
The mill was dismantled in 1921. The mill tailings were retreated in
1925-1956. Total production from the district, through 1956, is 22,859
units of WO (Stager, in prep.). Most of this is from the St. Anthony
3
Mine. At the time of our examination (April 1985) there was no activity in
the district.
GEOLOGICAL SETTING
The rocks in the portion of the Trinity Range included in the Toy
district include metavolcanic rocks, phyllite and slate, and limestone and
marble-all assigned a Triassic and Jurassic age. These rocks have been
intruded by a quartz monzonite body, about 1.5 miles wide and 3.5 miles
long, that is probably Cretaceous in age. Tertiary volcanic rocks cover
the older rocks in the southern part of the district.
Toy District - 1

ORE DEPOSITS
The tungsten deposits in the district occur along the margins of the
quartz monzonite body at those points it has intruded limestone of the
sedimentary section. Metamorphism of the limestone has produced tactite
along the contact between the two rock types. The tactite here is composed
of garnet, diopside, quartz, hornblende, clinozoisite, and calcite with
small amounts of pyrite and scheelite.
At the St. Anthony Mine, the intrusive contact dips 30 degrees to 70
degrees south and cuts across the beds at small angles. Tactite is present
along only a small part of the contact, but almost all of the tactite is
tungsten ore. According to Stager (in prep.), the tactite is rich in
fluorite below the 5th level of the mine and pods of galena, sphalerite,
and chalcopyrite were also found there. In the upper portion of the mine
the tactite is oxidized to a porous, friable aggregate of quartz, iron
oxides, and scheelite. The grade of ore mined from the St. Anthony Mine
averaged about 1.35% W03, the ore zone was from 1 to 15 feet wide in the
upper levels of the mine, but narrowed to a pipe-like body at depth. Other
small tungsten occurrences have been prospected around the St. Anthony
stock contact zone but ore has been produced from only one other, the
Payday-Lobo property to the west of the St. Anthony Mine.
At a small tactite zone on the contact zone about half a mile east of
the St. Anthony mine workings, stibnite has been found in a small quartz
vein. The vein occurs in siliceous wallrock and is apparently not related
to the tungsten deposition (Kerr, 1946).
GEOCHEMICAL RELATIONSHIPS
A sample of the St. Anthony tungsten ore (high quartz) showed an
association of tungsten, tin, beryllium, bismuth, lead, and zinc.
Molybdenum was reported present. A sample of high-garnet ore from the same
mine reported similar associations but with uniformly lower values. The
high-quartz sample contained over one ounce of silver. Samples from
deposits on the west side of the St. Anthony stock contained only low
values for tungsten and molybdenum and contained no bismuth or tin. These
samples, however, were slightly anomalous in barium.
Toy District - 2

SELECTED REFERENCES
Kerr, P. F. (1946) Tungsten Mineralization in the United States: GSA
Memoir 15.
Lawrence, E. F. (1963) Antimony Deposits of Nevada: NBMG Bull. 61.
Lincoln, F. C. (1923) Mining Districts and Mineral Resources of Nevada:
Nevada Newsletter Publishing Co., Reno.
Stager, H. K. (in prep.) Tungsten Deposits of Nevada: NBMG Bull.
Vanderburg, W. 0. (1940) Reconnaissance of Mining Districts in Churchill
County, Nevada: USBM IC 7093.
Willden, R., and Speed, R. C. (1974) Geology and Mineral Deposits of
Churchill County, Nevada: NBMG Bull. 83.
Toy District - 3

LOCATION
TREGO HOT SPRINGS AREA
The Trego Hot Springs area is about 13 miles northeast of Gerlach
along the northern and southern boundaries of the Black Rock Desert, in
Pershing County. The center of the district is near the junction of
Highways 48 and 49.
HISTORY
Included within the Trego area are the Arcturas Mine, about 10 miles
northeast of Gerlach off Highway 49, and the Cassidy Mine, about 3.5 miles
northeast of Highway 34 on the northern edge of the Black Rock Desert.
Approximately 5 to 6 miles east of Trego Hot Spring and south of Highway
49 are about 12 to 15 small mines and prospects located along the northern
drainages of the Pahsupp Mountains. The eastern most workings of these
were identified from location notices to be part of the Black Star Claim
Group. None of the current references for Pershing County describe any of
the mines in this area.
Stager (in prep) refers to the Arcturas property as a tungsten
prospect, discovered by the Dalton brothers and John Durin of Gerlach in
1941. In spite of the size of the workings, there is no recorded
production from the property.
GEOLOGIC SETTING AND ORE DEPOSITS
The Arcturas workings consist of a caved crosscut adit, 420 feet
long (Stager, in prep). The adit was driven into the steep northwest flank
of the Selenite Range near the contact between granodiorite, calc-silicate
rocks and interbedded metavolcanics. The scheelite-bearing tactite forms a
narrow band along the cliff and consists of coarse-grained garnet,
epidote, quartz, scheelite and occasional powellite. The tungsten ore
appears to be fairly high grade but the tactite zone is very narrow making
it difficult to develop reserves.
Opposite Trego on the north side of the Black Rock Desert is the
Cassidy Mine. The location is shown on the Trego 7-1/2' map in an
unsurveyed portion of T34N,R24E. The mine workings are in Permian
metavolcanics and metasediments near a contact vith granite. Currently
there are portions of the local outcrops that are covered by wind blown
sands. The entire area was under vater during the Pleistocene as vestiges
of calcareous lake sediments coat the rocks above the level of the mine
workings. An incline in the central part of the camp has explored a
quartz-rich hydrothermal breccia that is deeply iron stained and contains
visable pyrite, chalcopyrite, siderite-and possible silver
mineralization. A second shaft on a hill to the west of the main camp
contains dump material of quartz breccia but with less visible
mineralization. However, the country rock included granite vith epidote
coatings and skarn mineralization may be present. These workings appear to
date From the 1930's but may have been earlier.
Trego Hot Springs Area - 1

South of highway 49 about 5 miles east of Trego Hot Spring at about
4600 feet is the site of an old unnamed mine. The mine was developed on
quartz veins in granodiorite and has several south-bearing adits, both of
which are caved. Access to the mine for the last third of a mile was from
the south via a hand built road of granite boulders covered by gruss. The
vein material at the mine included copper minerals, tetrahedrite and
unidentified sulfides in a matrix of white quartz. The workings may
predate the 1930's but there has been no activity in recent years.
Along the northernmost portion of the Pahsup Mountains about six
miles east of Trego Hot Spring there are a series of small mines and
prospects known currently as the Black Star Claim Group. Development
includes roads that allow access from both the north and the east, neither
of which are in good repair. Mine workings include small shafts, adits,
open-stopes, minor trenching and prospects, with at least one ore loading
facility and remnants of a crushing and sorting mill. The development is
spread out over several square miles in steep terrain. Geology within the
claim block and in the area of the main camp consist of Permian meta-
volcanics to the east and granodiorite to the west. Most of the mining
activity was associated with fairly large north trending quartz veins in
granodiorite. Veins in the area of the mill site were mined through to the
surface as open stopes or pods. Some of the wall rock adjacent to veins
contains black tourmaline. Much of the vein material is scattered along
the mountain or broken into piles. The only visable mineralization within
this portion of the district was pyrite. To the southwest, at sample site
2930, is a cabin associated with an adit in dark gray granodiorite. Veins
in this area have considerable copper mineralization, including both
oxides and sulfides, some tetrahedrite, and possible silver sulfides. Most
of the workings in the claim block are old and may predate the 1930's.
SELECTED REFERENCE
Stager, 8. K. (in prep) Tungsten Deposits of Nevada: NBMG Bull.
Trego Hot Springs Area - 2

SELECTED REFERENCES
Kerr, P. F. (1946) Tungsten Mineralization in the United States: GSA
Memoir 15.
Lavrence, E. F. (1963) Antimony Deposits of Nevada: NBMG Bull. 61.
Lincoln, F. C. (1923) Mining Districts and Mineral Resources of Nevada:
Nevada Newsletter Publishing Co., Reno.
Stager, 8. K. (in prep.) Tungsten Deposits of Nevada: NBMG Bull.
Vanderburg, W.. 0. (1940) Reconnaissance of Mining Districts in Churchill
County, Nevada: USBM IC 7093.
Willden, R., and Speed, R. C. (1974) Geology and Mineral Deposits of
Churchill County, Nevada: NBMG Bull. 83.
Toy District - 3

LOCATION
TREGO HOT SPRINGS AREA
The Trego Hot Springs area is about 13 miles northeast of Gerlach
along the northern and southern boundaries of the Black Rock Desert, in
Pershing County. The center of the district is near the junction of
Highways 48 and 49.
HISTORY
Included within the Trego area are the Arcturas Mine, about 10 miles
northeast of Gerlach off Highway 49, and the Cassidy Mine, about 3.5 miles
northeast of Highway 34 on the northern edge of the Black Rock Desert.
Approximately 5 to 6 miles east of Trego Hot Spring and south of Highway
49 are about 12 to 15 small mines and prospects located along the northern
drainages of the Pahsupp Mountains. The eastern most workings of these
were identified from location notices to be part of the Black Star Claim
Group. None of the current references for Pershing County describe any of
the mines in this area.
Stager (in prep) refers to the Arcturas property as a tungsten
prospect, discovered by the Dalton brothers and John Durin of Gerlach in
1941. In spite of the size of the workings, there is no recorded
production from the property.
GEOLOGIC SETTING AND ORE DEPOSITS
The Arcturas workings consist of a caved crosscut adit, 420 feet
long (Stager, in prep). The adit was driven into the steep northwest flank
of the Selenite Range near the contact between granodiorite, calc-silicate
rocks and interbedded metavolcanics. The scheelite-bearing tactite forms a
narrow band along the cliff and consists of coarse-grained garnet,
epidote, quartz, scheelite and occasional powellite. The tungsten ore
appears to be fairly high grade but the tactite zone is very narrow making
it difficult to develop reserves.
Opposite Trego on the north side of the Black Rock Desert is the
Cassidy Mine. The location is shown on the Trego 7-1/2' map in an
unsurveyed portion of T34N,R24E. The mine workings are in Permian
metavolcanics and rnetasedirnents near a contact with granite. Currently
there are portions of the local outcrops that are covered by wind blown
sands. The entire area was under water during the Pleistocene as vestiges
of calcareous lake sediments coat the rocks above the level of the mine
workings. An incline in the central part of the camp has explored a
quartz-rich hydrothermal breccia that is deeply iron stained and contains
visable pyrite, chalcopyrite, siderite, and possible silver
mineralization. A second shaft on a hill to the west of the main camp
contains dump material of quartz breccia but with less visible
mineralization. However, the country rock included granite with epidote
coatings and skarn mineralization may be present. These workings appear to
date from the 1930's but may have been earlier.
Trego Hot Springs Area - 1

APPENDIX A

Sample Number
Location
Quad: Kumiva_.Peak-l51_
Sample Description
Sec:
27,34
~ ,
30N 2 3E
7 _. - . . -~
UTM 4478000 .( 0297300 ..
TMB Associates claim
E
-- -
Grzab- s-a-mple from outcrop. Siliceous,
uru 4478800
-- - - - -
- 0297600 . - - - - - E
reekhear ing sub-aa~!eouS-_sa l-g-
---.-- sinter -- .-. . --
- (from -- - -- L. - Garside - - -- sample HS-8)
TMB ~ssociates claim
Hooker district
Grab..
sarnpAe _ fr-~n_utcro~-_FLn-e1~
-
laminated, subaqueous sinter,
. ~. .. .... -
LT Carside sample HS-7.
.- - - . -- .- . - . . - . -- - - - -
- -
Quad: McDermi~tx!- m - - . - c- . - - - k . . - . - s - .- &(frornqutcrop) consisting
UTM: 4626500 I -Ok5_L440-~
Paradise Mine
National district
UTM: 4626700 -- 0455100
Buckskin National Mine
National district
- . . - . . -
Quad. - . - -- -
Sec T - 17 - - -.
U7h.l - _ 'I -E
--
Sec: R. ---- 39E
UTM 4627200 N 0455LOO~
Halcyon Mine
--
Quad
National district
McDermitt 15 '
s, c SE/4,NE/4 Sll~ -- 45N R 39E
UTM-hh2775fl NL455!?!?R.-E
Unnamed,Buckskin Mt.
National district
Quad: -. I
UTM: N
-E I
Quad:
Sec: T:. R :
UTM: N - E
Descripti~n
%elect quaytz vein matter. f-rom dump.
Probably represents average grade ore.
Ore minerals include electrum,
- - - - - -- - - - - - -. -- - - - - - - -
-
pyrargyrire,
- --
miargyrite, naumannite,
-- . - -- - - - - - - -. - - -
tetrahedrite, galena, pyrite, chalco-
pyrite, bornite 2nd s_t&bnite.
- .- -. - - - -. . -. - - - - - -
- -
- Select - - -- - - - qgartz . - - - -. . - vein -. . - - matter - - from . - dump
of adit. Sulfides and sulfosalts in
quartz after lamellar calcite.
-
Select s tibnite-bearingchalcedonic
- .~
quartz vein matter from top of
- - - - - --
Bell vein.

Sample Number
492
495
Sample Description
I I
I Quaa Xnlconda74' - - I Grab sample from pitace of i ron -
SE/4 S18 36N , 41E
. light . . - gra$ - - -. phyllite.
I Sec -- t - ---- I stained
4537800
Preble Mine
Location
UiM. -- ?i . 0467000 . - .
Golconda district
OuJd -Colconda3k1-
18
Sec T 36N a 41E
UTM bw8m
Maggie No. 1 claim
Golconda district
0466400 r -
Quad Winnemuc-ca 15 '
SW/4 8 35N 40E
-
UTM 4530009 J Q4lZ5!.lD--E
Unnamed -- - -. - - - - -. - . -- - - --
.- ..
-- I . - - - - -. -. - -. . - -
.- --
Description
vein material from dump.
. - - .
-- -. . . .
- -- - - -
-- -- - .- - - -- -. -- -
Quad GOlc~ncLa 7%' -
S elec t sample-fr om h n q ~ V e i r q u a ~ x
Sec 76 T 3 6 N ~ ~ ~ ~ wi_thligon.i-te, - -
oxide copper minerals.
UTM 4 5 3 5 1 0 .W!&@-E wad, and remnants of chalcopyrite and
-- -. - - -. - - -- - -
July 4 claim -- - pyri-te . One pie_ce-of hemati tic
Golconda district
Quad. IWinnemucca 15 ' rom.dumpsChal r~donic
Sec: NW/4 8 - I . 35N , 40E - i I -_ vein .-._...---p-.~. matter with sparse pyrite.
I
UT:~. -45305500 . . :J 442~7100-~ 1 --
Golconda Gold Ledge -- Mining Co. I ~
-trict
S-elec t- sample.£ romsnall-pprospectnit.
Quartzite with limonite and cxide
Golconda district
Ouad Cn1 ro& 7%'
17
Sec: --- T. 35N R 4lE
UTM: 4528500 F; 446IBOOi
2.m-Ern- --
Ouad
Golconda district
Golconda 7%'
Sec 19
- 35N 41E - a
UTM 4527300
Name Unknown
Golconda district
N -0466200~
Quad: Golconda 7%'
Sec- 3 0 T. 35N R. 41E
UTM: 4525000 N 0466400-E
Ben claim
Golconda district
Quad Goldrun_Creek$'
Sec 17 34N R -- 41E .-
UTM 4520310- N -0464720-E
Name Unknown
Gold Run district
.c.~p.p_ermine.ral-
Graab.sampPl.ee -f_rommpiitsnea-themin
shaft. - Oxide - - - - - -. copper - . -- minerals - in
gr-ee_n.s~.o_ne. -
Grahsamplef rm-largesLQpeQ~
Quartz vein matter and gossan; oxide
- coEper minerals.
Selec tsample-~Lrnanga-oxide-
material from dump of small prospect
- Grab - sample from bulldozer cut. Oxide
c a p p e r _ m i n e r a l s t c r ~
fractures in say chert.

Sample Number
~ocat~on
Quad Goldrun Creek 7 112'
13
34N 4 0E
Sec -- , ----- 9
UTM 4518580 N 0464410 c ,.
Gold Run No. 23 claim
Gold Run district
Sample Description
Quad Goldrun Creek 7 112'
Set: 13 T 34N R 40E
-------
--
UT, 4518500 , 0464400 F
Gold Run No. 23 claim
Gold Run district
Quad Goldrun Creek 7 112'
Sec SE/4 14 - 1 - 34N R 40E --
UTM 4518250 N 0463460 E
Copper Head property
Gold Run district
Descriptian
Sample is grab from bulldozer trench. -
Disseminated pyrite in mafic - - - -. - --
metavolcanic rock; very sparse
-- --
oxide copper minerals along
-fractures.
Selectsample - -
from deep bulldozer
trench. White quartz vein matter
-- - --
with limonite in cavities.
. - - -
.--. S-eelecL -~.amplefra~nutcrap f VP i n
near adit portal. Molybdenite,
- - - - - -- - - - - --
chalcopyrite and pyrite in vein
- -- -. - - - -
quartz.
. . - . . . -. - -
I
~uadGolconda71/2' ______ i - -G rah s-mpl.e-fro.f aceofopenruut
Sec
- T . - R I
26 3 5N 40E north end. Oxide copper minerals and
UT,: 4525200 -
Silver Hills claims
-- -----A-
Golconda district
Quad. Goldrun Crcek71L2-L
Set:
;J 0462700 =
2 2 34N
T - p. 40E
UTM: 4517335 -- N 046_1,6-7L~
Willcox Tungsten prospect
-. - - -
Gold Runistrict
Quad -
Sec - T R
UTM - N E
Ouad.
Sec. _- T. - R
UTM: N - E
Quad:
Sec: T - R.
UTM. N E
Quad.
Sec. T -- R.
UTM N E
-
limonite occur along fractures in
- -- ---
light gray phyllite.
- - Grab sample from dump. Skarn with
-. . - - . -- - pyrite, chalcopyrite, magnetite, and
. - . -
scheelite. Quartz, diopside and
-
garnet also occur.

Sample Number Location
Sample Description
ouad: Lowry Well 7 112'
Sec:
6
T : 27N R: 29E
UTM:
Quad:
4455900
Velvet Mine
Velvet District
Sec: T : R:
N 0345800
UTM: N E
ouad: Lowry Well 7 112'
Sec: 6 T: 27N Ri 29E
UTM: 4456100 N 0349400 E
Vent Claim Prospect
Velvet District
Quad: Lowry Well 7 1/2'
~ec: 6 T: 27N R: 29E
UTM: 4455100 N 0349900 E
Velvet District
Quad: Lowry Well 7 1 /? '
~ec: 6 T: 27N R: 2%
UTM: 4455300 N 0349700 E
Velvet District
Sec: T: R :
UTM: N E
ouad: Rocky Canyon 7 1/2'
Sec: I'
UTM:
Quad:
1 7 7 1 31 3072
3111
4490000
T:
Farrell District
Sec: T : R :
N
R: LJk
0352300
UTM: N E
Quad: Rocky Canvon 7 112'
Sec: 16 T: 31N ,:
2 9E
u : 4489700 0352800 E
Farrell District
Description
Chip sample, 1' of silicified rubble
exposed in trench, south side of old
--
shaft. Silicified tuff along shear
zon?. Rubble composed of rounded
fragments of dark, fine-grained quartz
in matrix of sericite, clay with clots
pale amber jarosite.
Silicified rhvolite tuff breccia.
chalcedonic silica matrix, spots
of fine-grained, gray sulfides(?)
Kaolinized, silicified welded ash-flow
tuff. Dull, orange-brown limonite on
fracture surfaces.
Silicified tuff breccia: angular
fragments of argillically altered tuff
cemented by chalcedonic silica, rinds
of silicification on fragments, vugs
-
lined with micro-crystalline quartz,
filled with clots & crvstalline masses
of jarosite.
Chalcedonic silica vein in shattered,
FeOx-stained granodiorite, possible
disseminated sulfides in dark
chalcedonic bands colloform banding
some lamellar quartz-after-calcite,
fine bands of dark metallic mineral(?)
possibly free gold.
White. chalcedonir quart7 vein-d
vuggy with acicular quartz crystals
lining vugs, limonite points in wall
rock along vein. ,

Sample Number
Sec:
Location
Rocky Canyon 7 112'
17
31N ,: 29E
T :
UTM: 4490150 N 0352150 E
Wildcat Mine (upper)
Farrell District
Quad: Rocky Canyon 7 1/2'
Sec: 17
T : 31N R: 29E
4489800 N 0352100 E
Wildcat Mine (lower)
Quad:
Farrell District
Sec: T : R:
Sample Description
I UTM: N I
Quad: Juniper Canyon
19
7 112'
Sec:
T: 31N ,: 29E
UTM: 4488850 N E 0350350
American Flat Canyon Mine
Farrell ~istrict
Quad: Juniper Canyon 7 112'
25
31N ,: 2 8E
Sec:
T :
uTM: 4486650 N 0349150 E
Stonehouse Canyon Mine
I Quad:
Farrell District
Sec: T : R: I
UTM: N
I
Quad: ~ocky Canyon 7 112'
sec: 33 T: 31N R: 29E
UTM: 4485600 N 0352700 E
Devaney Property
Farrell District
Sec: T: R :
UTM: N E
Description
- -
White chalcedonic quartz vein in breccia
colloforn banding. dark str-ks of
metallic mineral and free gold alone
bands, acicular quartz crystals in vugs.
clots of marcasite in some rocks.
Chalcedonic vein quartz, vuggv, dark
streaks (sulfides?), possible free
gold, vein fragments in breccia.
recemented with silica. Some vein
fragments display lamellar quartz
after calcite texture, blue - bla&
sulfide-maybe Ag mineral(?)
FeOx-stained, kaolinized. banded
rhyolite, patches of tiny quartz
crystals covered with granular masses
of shiny, botryoidal MnO.
White, chalcedonic vein quartz. lamellar
quartz after calcite texture some pyrite
along dark silica banding, heavy FeOx-
staining, points of dark sulfide(?)
quartz crystals line vugs in lamellar
quartz.
Silicified rhyolite. chalcedonic quartz,
fluorite crystals on surfaces of
vugs in quartz, clear fluorite forms
mamillary coatings on vugs, wallrock'
Iaced with silica veinlets, some clots
of pyrite in silica. fluorite on auartz
crystals in vugs, clots of pale green
mineral(As?)
1489
I Quad: Rocky Canyon 7 112'
I Chalcedonic quartz, FeOx-stained
acicular quartz crystals coating vugs,
Farrell District
some lamellar quartz-after-calcite.

Sample Number
1490
Location
Sample Description
Quad: Rocky Canyon 7 112'
Sec: 3 3 . 31N ,. 29E
Farrell District
a,ad: Rocky Canyon 7 1/21
cr... 32 7. 31N ". 29E
Farrell District
a,ad: Rocky Canyon 7 112'
sec: 21 T: 31N R: 29E
UTM: 4488800 0353500
Farrell District
Quad: Seven Troughs 7 112'
~ec: 18 T: 30N R: 29E
UTM: 4482270 N 0350060 E
J & B Mine
Quad:
Seven Troughs District
Sec: T : R :
UTM : N E
Quad:
Sec: T: R:
UTM: N E
Quad:
-
Sec: T : R :
UTM: N E
Quad:
Sec: T : R :
UTM: N E
Quad:
Sec: T : R :
UTM: N E
Description
Pale-colored, clear fluorite vein
material, some vein quartz, patches of
--
pale blue-green staining on fluorite
- -
(Cu?) .
Kaolinized, FeOx-stained rhyolite.
some fluorite, chalcedonic quartz,
aragonite crystals.
FeOx-stained. kaolinized. rhvolite.
some opaline silica.
Mod. silicified, greeenish, fine-
grained andesite mud flow, some quartz
& calcite pods & stringers. FeOx-
stained, clots pyrite, clots stubby
white crystals (quartz?). white
mineral fills vups, on quartz crystals,
maybe adularia.

Sample Number
1794
Sample Description
1 Quad: I
Sec: T: R:
UTM: N E
I I
Quad:
Location
Quad: S u u r 7 117 '
Sec: 35N 29E
UTM: 4524280 N 0357500
Sulphur mines Patented ground
Rabbitt Hole District
Sec: T : R.
UTM: N E
I Quad: I
Sec: T: R:
UTM: N E
Quad:
- - --
Sec: T. R:
UTM: N E
Quad:
Sec: T : R :
UTM: N E
Quad:
Sec: T. R :
UTM: N I
Quad
I UTM: N I
Quad:
Sec: T: R :
UTM: N E
Description
Rhvolite breccia, highlv altered-red-
brown iron staining. Sulphur, alunite,
mercury, Hot springs environment along
fractures and faults.

Sample Number Location
Quad: Sulphur 7%'
Sample Description
Sec _ _ _ _ _ _ 35N 29E
T . A --
4525300
UTLl !I
Prospect
Rabbit Hole District
Sulphur 7%'
13
0357500
-E
Quad: -- --
Set :
T. 34N 9, 29E
UTM: 4519100
5,
Rosebud Mine area
0359900 E
Rosebud Mining District
Cuad: Sul~hur 7%'
Sec: 12,13 T: 34N a: 29E
UTM. 4518950 0360180 E
Rosebud Mine Area
Rosebud Mining District
Qua,: Sulphur 7%'
19 34N 30E
Sec T R --
UTM 45l8lr)r) 0360900_~
So. East of Rosebud
Rosebud Mining District
Quad Sulphur 7%'
19
34N 30E
Sec
T
UTM 4518300 0361000
So. East of Rosebud ~ i n e
Rosebud Mi'ning -D1'St r:Et-
Quad Sulphur 7%'
Sec 24 T 34N 2 9E
UTM 4517000 N 4359200 E
Prospect
Quad: .
Rosebud Mining District
Sec: T . R:
UTM: N E
Quad:
Sec. T : A :
UTM. N E
Quad:
Sec: T : A :
UTM: N E
-
_8hred rhyolite bresia chalcedony, -. --
- tuffsduar-t~wispy .- -.
gray streaks.-
Sulfides-sulphur.
Hig_h_lv altered fault gouge and
rh~olitebreccia.
Altered. bleached, rhyolite breccia.
Some sulfides, possible gold.
Kaolinized.
- Rhyolite breccia. Fe-oxides limonite
in Vugs, possible gold-silver. -
Kaolinized. Some streaky gray clots.
RhLolite breccia, gouge Fe-oxide.
-- - --
Quartz with minor sulfides.
----
Altered rhyolite breccia in fault
zone with kaolinized fault gouge.

Sample Number
Sample Description
Q,,~ Mud Meadow 7 112 ' --
urM: 4573180 --- \I 0321600 . i
Copper Canyon
a,*: Mud Meadow 7 112' -
Sec r R
UTM: 4573270 N 0321910 E
Copper Canyon
Quad: Mud Meadow 711 2 '
Sec: - T -_ R --
UTM: 4573120
0321935 -
N - -
Copper Canyon
--
Quad Pinto Mountain 7 112'
18 SE 114 40N 28E
COP.
QGL. n --
UTM: 4580460
~,,d: Big Mountain 7 112'
'J 0348930 _ E
Sec: T : R
UTM: 4569160 N 0324940
Sunset
Quad: Big Mountain 7 1/2'
Sec: T R. .
,. 4571200 0323110
-
N -
Quad:
Sec: T : R .
UTM. N E
Quad:
Sec: T : R '
UTM: N E
Quad:
3ec: T : R :
UTM: N E
Grab. Cabbro or diorite (P). Skarn.
Minor copper oxide & iron oxide.
Grab. Marblized limestone in contact-
with intrusive. Skarn.
Crab. Magnr-ti telhemati te replent_
pod - in - limestone. - - --
~agnetitelhematite
along with some secondary copper
. - -. -.
oxides.
-- --
Grab. Quartz monzonite.
Grab.. Fluorite vein in granitoid.
Fluorite .
-
Grab. Quartz vein in extensively
altered volcanic~(?). Quartz with
blebs of copper oxides.
- - - - - - -- - - --

Sample Description
Sample Number Location I Gescription
2236
2240
2241
2243
2244
Grab_ ,-~Al_t_ereha~~des itedliappg(:~eek
Volcanics.
~ - -. . . - . - - - . -. Massive . . . - . - magnetite . - . - -- in - - -- Hmy 4568000 0370700 Creek Volcanics, near contactwith
-. . - . . - - - - - - -
Quad. H~boC.anyon_Z.-~Z~.~- -
Sec - 18 NE1/4,~E1/4, 39N ? 31E
UT'A
EEK.-C~~~~~-FFZS~
Jackson Pltns. District
Q u ad H_o_bboOC_anyonl_ L/_2 ! - _ _ _
SeC 14a24,RE1/4r7 - _ _
39N
R 31E
UTM 4568230 i 0371060 j
Copper Head
i: I felsic intrusion.
C~ntinuous chip -3.2 ft. Andesite-
Happy - Creek Volcanic. Brecciated and
hydrothermally altered quartz veins.
malachite, chalcanthite. calcocite.
Jackson Mtns. District
Quad: Hobo Canyon 7 112'
Conti-nuous chip - loft., andesi te- -
18 NE 1/4,NE 1/4 39N 31E Happy Creek Volcanics. Hydrothermallv
Sec. R:
UTM: 4568290 M 0370790
with limonite, malachite, Fe/Mn stains.
Bliss Canyon -- Prospect pp - - -- .- - -
Jackson Mtns. District
Quad Hobobny~~~Z-~2L--. - Random chip - 9 ft. Happy Creek Volcan-
7 SE 114-NE 114- 39N , 31E
Sec ' -
ics-shear zone contact with felsic
-- - -. - - . - - . . .
intrusion. Bleached iron-stained,
UTM 4569230 N 0370990 L - - - -- - . -
Bliss Canyon Prospect
recrystallized "potassic", pyrite
- -- - -. - -. . - . -- -
Jackson Mtns. District
cast. Limonite.
ouad: Hobo Canyon - 7 112' - - -- - Hap= Creek Volcanics - Fault zone.
7 NW 1/4,NE 1/,4 31N 3 1E Hydrothermal. Calcite veins, some
Sec:
-
R 1
quartz veins, limonite.
- -
Crystal
Jackson Mtns. District
Quad Bartlett Creek 4 NE 7 112' -- Continuous chip 2.2 ft. Felsic
I
-.
.=a- 18,SlfiK, G17i4-39~ 3 1E intrusion. JCL . I -- Shear zone. Hvdrothermal-
-. . - -. - -
4567170 0;6*1? sercite. Limonite.
UTM:
m ~ k a ~ f i A t ~ ~mltttt n ~ s ~
-
Jackson Mtns. District - I
Quad Bartlett Creek -- 4 NE - - - 7 -- 1/2 ' - Grab. - - - -- Limes tone - pendent in andesi te
18 NW 1/4,SE 11-4 39N 3 1E of Happy Creek Volcnaics. Tactite.
Sec I R -__
- -
UTM 4567060 -- N 0370680
Malachite, garnet, hematite.
-
Prospect-Alaska Canyon
Jackson Mtns. District
Bartlett Creek 4NE 7 112' --
39E i . 31E
,SE1/4,NEl/+ fi
UTM: 4566080
Prospect
Red Butte
0372650 - E
@?4;r Bartlett Creek 4 NE 7 112'
Set
R 1 L
UTM:
L E ~ $ ~ N W / ~ .
T 3 8 N
4556540 0368270 E
Prospect
Red Butte
- -
Grab of du~~p. Andesite. Happy creek
volcanics-shear zone. Quartz veins-
-
hydrothermal-potassic. Malachite,
-
pyrite, chalcopyrite galena.
Massive --- specular hematite. Grah.
--

Sample Number
Location
8 w ~ ~J/~-sA/G
Sample Description
Qua Bartlett Creek 4 NE 7 117'
Set: .
- -
- 42 i
38N 3 31E.- . .-
UTM 4556600
Prospect
:I 0369050 - -
Red Butte ~istrict
Quad. Bartlettxrgek 4 N E 7 112'
.,, 19,SW/4,S~/4 , 38N 31E
UTM. 4555980 - -
-
- _.
N Q3$9245-_~
Bull Iron -- --
Red Butte District
ouad: Bartlett Creek NE 4 7 112'
Set, 30,SE/4,NE/4,SY/4 38N R: 31E
UTM: 4554990 ~1 O~~~~!KKL-E
Bull Creek /I1
Bull Creek District
Ouad: Bartlett Creek 4 NE 7 112'
set: 32, NEI4, NEIL. 39N - I .
R, 31E
UTM, 4563420
Red Boy Mine
:i 0372430 - E
Jackson Mtns. ~istrict
Description
Grab . - of dump. -. - . . - . . -- - - Highly altered Haqpv
--- . - . . -- - -
Creek andesite with malachite and
-- - - - . . - -. - -- . - - - - -. - . -. -
hematite.
chi^ - 3 Et. Massive hematite and
magnatite.
Stockpile grab. Quartz vein and
siliceous gangue with azurite, malachite,
- .- -- - --
bornite, asenopyrite?
- - -- Grab - of - -- dump.Siliceous vein with
sphalerite. Galena, pyrite & limonite
- -- - -
in Limestone Erags.
I I
I . ._ . .- - - -
2249 I Quad. Bartlett Creek 4 NE 7 112'
2250
2251
2252
Grab of dump. Fault breccia with
Set 33, SW/4, NW/4r 39N __;( 31E 1 calcite veins in limestone or andesite
,,,,, 4653170 ,, 0372695 [ manganese dendrites.
U I ,"I. . ' I
Prospect
-- A
Jackson Mtns. District
Bartlett Creek 4 NE 7 112'
.-
Sec: 4,NW/4 38N 30E
7: 4 --
uiM: 4559540. 0367290 I
Prospect I
Red Butte District
Quad: Bartlett Creek 4 NE 7 112'
~ec: 23, SW/4,NE/4 _ T
UTM: 4556870
Prospect
38N 4 3OE
0355290
Red Butte District
auad: Hobo Canyon 7 112'
UTM: 4574950 N
-per Canyon Claim 0372130 I
Copper Canyon - Christiorsson I
I -. I
Grab,-- F Ln_e_--gr-a.i ne_rl_volcanicrocL
Argillically. - - - - --
Light colored intrusive with quartz
and minor Cu stains .
--
2253 I Hobo Canyon 7 112' I Grab of dump. Epidote & q m ~ vein z
with chalcopyrite and Cu stains.
I Sec: T. R : I
UTM:
4574040 0372160
Copper Canyon -E I
Grab of adit dump.

Sample Number
2258
I
Sample Description
Ocad Hobo Canyon 7 112' -- --- -- - --- -
29
Sec -----p. - 40N 31E
1 R - -_
UTM. 4574370 'i 0372150 E
Copper Canyon
Christiorsson Canyon District
aUad cob0 Canyon 7 112' - .
Sec
Locai~on
29 40N 3JE
T -.
UTM. 4574420 -- N Q u W - E
Copoer Canvon
Christiorsson Canyon District
Quad Hobo Canyon 7 U7'
Sec 29 T 40N R 31E
UTM 4574550 k Q371900:
Copper Canyon
Christiorsson Canyon District
Qcad Bartlett 4 U p - -
Sec 5, NE/~,NE/~,S~/~ 38N R 31E --
UTM 4651490
Prospect
-- J 0371740 _E
Cedar Creek District
Quac Bartlett Creek 4 NE 7 117'
uTM: 4561310 \I -
-
Bullion
0371390 --i 1 - -- --
Cedar Creek District
Quad: Bartlett Creek 4 NE 7 1/21
S~C: 19, NWI4,SW/4 T pp 38N R, 31E
UTM - 4556350
Prospect
O36965OpE
Bull Creek District
Quad: BaTtLet~Crp~k NE 7 112'
~,Nw/~,SE/~,NE/+~ -- 38N 31E
~ T M : 4561770
Prospect
. N 5!Xa28Q-€
Head of Big Cedar Creek District
ouad. aartlett Creek 4 NE 7 112'
38N , 3 1 ~
Sec ~,NW/~,NLJ/~,NE/,~ --
,,,I 4560560 N O37114OE -
Iron Girl Claims
Head of Little Cedar Creek District
a,ad, Ashdown 3 SE(Duffy Peak) 7 112'
uTM. 4506900 N 0353950 E
Skyview Copper Dyke
Snowcreek District
I
I
Grab of high grade.
Cescripl~on
Limestone 6 Happy Creek Volcanics with
- . --.
-- - . - . -. - -
Cu stains .
Select - - -- - - of - - -- mineralized mate-rjal. hipaltered?
with pervasive Cu stains.
Grab of Magnetite vein.
Grab of magnetite vein.
- - -. -. -- -
Grab of ore pile.
--
Select of miner&edmatF?rial.
Felsite. Chrysocolla and malachite. -
Siliceous shear zone.

Sample Number Location
Sample Description
UTM, 4620200 0361100
. N E
Adams Mine
Boyd Basin - Florence District
Set: 35, NW-SW-SE 43N 28E
T -- - -- .-
"1,: 4607575 0355750
4
Exxon-Buck Group
Quad:
Snow Creek District
Sec: T : n:
UTM: N E
Quad: - a
Sec- 1: 3:
UTM: N E
Quad:
Sec: - 1: - _
UTM. - - N - 5
-- - -
Quad: .-
Sec: T : R: --
UTM: -- N E
Quad:
Sec. T : R. __.--
UTM: N E
Quad: -
Sec: T : R :
UTM: N
Quad:
- --
Sec: T : R :
UTM: N - E
A:
Description
Quartz -- vein in gneiss.
. - - . . . - - - - - - -- - - - -- - - - - - - -. . . -. --
G_r~b
of s~qckpile. Quartz vein with
molv .

Sample Number
Sample Description
Sec 2 0 r 34N .. -. a 40E-
UTM. - 4517010 -
Adelaide Mine
0458370 --E
Gold Run district
Quad. --G~l&un Creek7112!--
sec: 20 T -- 34N R. -- 40E
UTM:
4517070
N - 0458575
Name Unknown
Gold Run district
Quad: Winnemucsa 15'
Sec: 17 34N
T: - R: 40E
U T 4518800 N 0457100 c
Apex No. 1 claim
Gold Run district
Quad. Winnemucca 15 '
Sec:
13
- 34N 39E
T: - a
Uihl: 4518200 0455400
N - E
Open pit
- -
Gold Run district
Quad: Winnemucca 15 '
Set:
UTM.
7
4520000
3 4N
N
40E
- 0456000
Name UnTnown
T: R. -
Gold Run district
Iron Point 7 112'
Set.
1
3 5N 41E
- T. - R. ---
UTM: 4531900 N
Silver King Mine
0473200 E
Iron Point district
Quad: Iron Point 7 1/2'
Sec:
UTM:
2 T. 3 5N
4530600
- - N
Silver Coin Mine
41E
R
0472800
E
Iron Point district
Quad: Iron Point 7 1/2' --
Set: 12 . 35N R. 4 1E
UTM: 4530000 N 0473200~
Iron Point Vanadium Occurrence
Iron Point district
-
Quad: Iron Point 7 112'
Sec: 12 - T. -
4529400
35N - R. 41E
0473500,
UTM:
Quick Gold No. 4
Iron Point district
N
Description
- S e 1 - e - - c - t . - - dumua_mpLe - - -. ,. H.a-ssiv_es uWde
. .- material .~~ . - . . . ; -chaJ:~pyrite,and~_pyrrho~t-i te
in calc-silicate rocks.
-S_e l eccdump_sample_,
Garnet, idocrase?arrhotite,
. -- - . - - - . - -- - -- -.
chalcopyrite, pyriteL and a 1ittle~-scheelite.
Select dump sample. .-
Vein quartz with limonite gossan and
-- - -. - . - --sparse
pyrlte.
- Select - - - - -- - . -- sample from wall of open pit.
Vein quartz matter and pyritized
--
siltstone and sandsto

Sample Number
2310
Location
Quad: Valmy -- 7 112' - -
Set:
12 --
r
Sample Description
34N
42E
7 - - - . _ - . -
UTM: 4520700 0482800
JaspeiEZa-T- 3
Buffalo Mountain Area
Quad; Golconda 7 1/2' .-
6
Sec: -
UTM:
--
35N 41E
- T: 9: --
4531660 0465550
N E
BR clalms
.
Golconda district
Quad: Brooks Spring 7 112'
Sec: 33 34N 4 2E
T. - 9: - -
UTM: 4514360 0478230
N E
Name Unknown
Buffalo Mountain ~r

Sample Number
2319
2320
2321
2322
2325
2326
2327
Harmony
Quad: WimemucUL
Sample Description
~ec: I T: - 35N 17 38E
UTM: 4531675 N - 0444525 -- c -
Gayer-Moo
Harmony district
Quad: Winnemucca East 7%'
Sec.
1
Location
Quad: _-L~a_~hHot~pr~~gs_ 15 '
set NEE-1.8- r 33.fJfJ_- a 40E
4509850 0457025 E
UTM. Pi
Son No. 6 claim
Gold Run district
Quad: - Leach Hot Springs - - -- 15 ' -- -.
~ec. 20 T 32N ,: -- 39E
UTM: 4498250 N 0448825
Horton Mercury Mine
Quad.
Set:
--
Tobin & Sonoma Range Area
Leach Hot Springs -- 15'
5 3 2N 39E
- T. R- --
UTM: 4503375
Waho claim
Washiki district
N 0447325 E
Quad: Wirmemucca 1!:
Sec: --
15 3 5N
T: -
38E
8. _ _
UTM: 4527875 N 0442600 _;
Old Bull Mine
T :
35N 38E
R' -
UTM: 4532490
Harmon~ Mine
N 0445590 F
Harmony district
Quad Winnemucca EH t 7%'
Sec 6 35N 39E
T - R
UTM 4531930 N 0446020~
Name Unknown
- -- --
Harmony district
Quad Mount Tobin 15 '
Set 1 28N 39E
R --
UTM 4464325 N 0454725-E
Mount Tob in Mine
Mount Tobin district
Quad Mount Tobin 15 '
Description
Select sample of quartz vein matter
-~
from several dumps. quartz, iron-
- . --
and manganese-oxide
~ minerals,
sparse
green oxide copper minerals, pyrite,
-. - - - - . - -
chalcocite?, and tetrahedrite?.
- Select - - . -. - samqle - - -- from wall ofpit.
Ocherous gossan with sparse
-. .
d isseinina f Fd-FTKrnab'ir.
- - - - -. . --
-
-.
Grab sample .- - -- - from outcrop. Limonite,
iron-stained granodiorite, and
-- . - - - -
gouge?.
~
- - - - -. - -. - - -
- . -
--
-S elec t v_~ma~r-f-~_ornup~_exworki_n s
dumps. Oxidized quartz vein matter
- pp -. . - -
containing limonite, cerrusite, anh
~- - .- - . - - -
sparse galena. -- -. - - --. - - - - - ---
' Grakd_u_mp sample. Limonite-encrusted
rhyolite and sparse quartz vein matter;
visible cinnabar.
Select dump sample. Quartz-calcite
- - - - - - - - - - - -
vein matter with pyrite, chalcopyrite,
- - - - - -. - - .- -- -- -
-limonite, malachite, and rare
azur-i te+-----
-. Grab . - . and select dump--sqn&e,. Quartz
- - -. . . . -- - - . . . - - - - - - . .- .
vein matter with pyrite, chalcopyrite,
- - -. - --
- . limonite, . . -. - - - - - - malachite, and rare
azurite.
Select sample from wall of an open
..~
-
cut. Fault breccia material in chert
pebble-conglomerate withainty
cinnabar.
~ec. 12 28N R chalcedonic and crystalline vein -- - -- - - --
4462750 0452900 quartz witharse limonite.
UTM . - N
Right Fork prospect
Mount Tobin district I

Sample Number
2328
2329
Location
Sample Description
I I
Quad.
Kennedy district
Leach Hot Springs - - 15' -- - - -
set. 30 7: A N - R.
UTM- 4486200 0456550
Tobin and Sonoma Range Area
Quad: Kyle Hot Springs 15'
c..~ 14
UTU, 4460650 N c 0433925 r
Granite Mountain Drill Site 101
UTM: 4463473 II . 0433525 . c -
Henrietta Mine
Kennedy district
Ouad Kyle Hot Springs 15'
csr- 8 . 28N 37E
--
UTM- 4462620 0428225
N E
Name Unknown
Kennedy district
Quad: Kyle Hot Springs 15'
Sec. 24 30N 36E
T:
R- --
UTM: 4478175 N 0425450 E
Star Point Mine
Willow Creek district
Quad. China Mountain 7%' --
6 3 1N 4 1E
Set:
4493080- T. & 66390-
UTM: N
Land ~ G e claims r
Desc;~ption
Set .
uT,
Mount Tobin 15 '
30 - -- T 28N
4458550
-
I Sample is se ect ore rom au roa
_- I _-l- --_E
P 18E .-. - near ore bin. _V_vein_quar_t-z-~_i th -- -
0436675 pyrite, galena, sphalerite,
E -- - - - -- - - - - - - pp ---
Imp eyialUi3!?
tetrahedri~, and- chalcocite.
Kennedy district
Kyle Hot Springs 15 '
I
Select sample from dump of lower adit.
-- - - - . - -. - --
sec: 25 r. a -- 28N R _31_E-- -Quartz vein material and pyrite,
UT, 4458025 - -
Gold Note Mine
Kennedy district
N -0435400 I - . E
galena, tetrahedrite, and magnetite.
- - -- - - -
- Oneqiece - - - - - of - - granite - -. porphyry.
Set:
.
Kyle Hot Springs 15'
- -- - - -. - . .-
13
2 8N 37E
- T : R:
4460500 0434825
- N
Granite Mountain property
- Grab --- sample of rotary drill cuttings
from around two adjacent drill holes.
- - -- --
Kennedy district
ouad: K y l e Hot Sprinzs 15 '
2
Sec:
T - 28N R. 37~- 1
Iron Hat district
Select sample from dump of adit.
-- - - - - --- - - --- - . . - - - - - - - - - .- -
Massive black manganese oxide minerals
and chalcedonic silica.
-. Select . - - core chips and finely ground - -. . - . -. - --
-ro&-€~o~.diarnond4~riUk
Granodiorite . - - with pyrite, molybdenite,
and cha1copgri~e.-
- -- -
~ --
Select sample from ore bin at lower
. - . - - .
adit. Quartz vien material with
-. - - - - --
sphalerite, pyrite, arsenopyrite, and
-- -- .- - - - - - - - - -. -.
galena. - Calcite also present as
-- -
gangue.
- Grab -. . . - . sample . - - from - - . -. . . dump. -
bull
quartz with clots of sericite and
sparse limonite. . - - -- - -- -- -- - - --
Select samjle from dump and pit face.
- - . - ---
-Azurite- and- m a l a c h i t e n m ~
-- fracture coatings on dark quartzite
and argillite.
Grab sample from dumps and outcrop.
- - - - - -- - - - - . -. - - .
Sample includes j asperoid, vein
barite, and gossan. Remnant pyrite
-. - - . - - -. - - -- -
occurs locally.

Sample Number
2337
2340
2341
2342
2345
Location
Sample Description
Sec:
UTM: 4491120
N
Silver Lead Mine
0466330
E
Quad:
Iron Hat district
Fence~ker 15'
Sec:
3 3
T :
2 6N 36E
R - -
UTM: 4437525 I 9420150 E
Name Unknown
Table Mountain dl'sFict
auad. a n
Glen 15'
11
Sec: T.
3 3N 36E
R.
UTM: 4510240 N 0424175 E
Monroe Mine
S i e r r a district
Oescrip tion
I
1
Ouad,
Sec
China Mountain 7%'
7 3 1N 4E --. .:-
T: - - R.
I
I
- S e le g_-.sar?! k~Cr sm-d_um40ff --
southeast - . - adit. Light . - tan jasperoid.
UrM: -4491960 - N -0466400 - E
Aldrich Mine
I --
Iron Hat district
Quad: - China Mountain 73'
7 31N
- T.
41E
- - Select -. . - - ~ ~-~kfmmdum~-.Sulfidp~
bearing vein matter consisting of
white barite, sparse galena, pyrite,
ouad Fencemaker 15
28
Sec
Quad: Rose Creek Mtn. 7%'
T 2 6N 36E
R - -
UTM 4438825 N 04 2 09 5 0 E
Freckles
-
Quad
Table Mountain district
Fencemaker 15'
Sec
UTM
32
4 4 3 6 9 F
Audloey claim
26N
N
R 37E
0427800
E
Table M ountain district
o~ad Leach Hot Springs 1 5 '
Sec 23 31N , 39E
UTM 4488675 N _@57300 _E
Big Mike Mine
Tobin and Sonoma Range
Rose Creek district
Rose Creek Mtn. /%'
5 8
sec. r T. 34N R: 37E
UTM: 4521460 N -E
Minerals Associates Mine
Rose Creek district
sphalerite, chalcopyrite?, limonite,
-.
and rare ~~~~Foppe~rniGFaal~.
-$.lecCt -s_ampLe-aLtmineera1 iz.ed-.limestane
from dump.
--
Cinnabar occurs as
fracture .- coatings..
-. - - - -. - - --
-Gr-ab - samplefrom-maknpen-ru tL - -
Silicified limestone and limestone -
-_b r-e-ccia;_n~-at_trernp~t ~inrludp
mercury-bearing -- rock.
.Sarnpk-abiron-stained~ack
(limestone, -. - - -- sandstone, - and siltstone)
and select quartz-calcite veined rock.
-
Cinnabar occurs in veins. Samples -- -- are
from dumps.
S P I P P ~ massive sulfide ore sample
from boulder on dump. Ore consists of
----pyrite,
chalcopyrite, and sphalerite.
Select - s.a-mp-le-f-romdump.. Quar-tz vein
matter with galena, pyrite and
Select sample from dump. Scheelite-
bearing quartz, sulfide--rich skarn
and a piece of granodi0r)te.
Select sample from face of open pit.
Vein quartz and argil-lized
--
granodiorite. Veins contain pyrite,
and sparse galena and sphalerite.

Sample Number
Location
Sample Description
Description
Quaa RoscCreek.-Z.?j-~- -Grab- sample-oiqWt.veinolatter,--
Auburn Mine
Sierra district
Quad: Dun Glen Peak 7%'
Set
12
T 33N 36E
R
4511750
UTM: - N 0425050 E
Auld Lang Syne Mine
- -
Sierra district
Cuad: Dun Glen Peak 7%'
Sec: 5 34N T: - - R 36E
UTM: 4527400 N 342Q130 t
Victory Manganese prospect
-- --
Rose Creek district
auac: D u n Glen 15 ' 52-E.-
~ec: l7 T : 3 3N . n 5-X
UTM: 4 5 0 8 7 7 5 - N -0b$28!dQ-~
Little Jupiter Mine
Sierra district
- -
Q3ao Rose Cregk Mtn. 7%'
9 3 3N 37E
R:
Set:
Name Unknown
Sierra district
Quad: Dun Glen 15 '
T: pp
~ec: 20 T: 33N R: 37E
CTM: 4508200 N E 0429225
Four Sisters Mine,north working
Quad:
Sierra district
Dun Glen 15 '
Set. 2 0 T.
33N 37E
UTM: 4507750 N 0429350 E
Four Sister Mine,south working:
Quad:
Sierra district
Sonoma Canyon 7%'
33N R: 38E
Sec. 1 T :
UTM: 4513150 N 0444220 E
Midway Group Mine
Washiki district
Quad: Leach Hot Springs 15'
.Set: 2 T : 3 2N 17: -- 39E
Milky
UTM: 4503350 N _!CE
Black Diablo Mine
Black Diablo district
. .- -~ quartz .--. . . . . . with
- scattered limonite
. . - -
Grab . - - sample - - - - of - - -- vein quartz. Milky
- - quar-

Sample Number
2358
2359
I I
Quad Adelaide Z'Z. - ____ --
3 4N
Sample Description
Sec 3 . . 1 _ _- - . ? 40E -- -
UTMA~XLI~--
Cumberland Mine
>: ~~LU~O-E
Gold Run district
Quad. SGlenL
Sec: 14 - T -- 3 IN a. .36E---
UTM: 4 4 9 0 4 M -
Name Unknown
PI 134241QL-E
Willow Creek district
Winnemucca West 7%'
Quad:
Location
T M 4537190 - N E 0434520
Name own
UTM: 4484480 PI 0442250
Antimony Ike Mine
Quad
Goldbanks district
Leac-h Hot Springs 15'
31N ,: 38E
Sec: 35 - T.
I
UTM: 4485250 PI 94425QL~
Name Unknown --
Goldbanks district
-
Descr~ption
: - .S..elec_t__.s amp LeEr~m-.du_mp-md_p i -alJ .
. Massive . . ga-1enarsphalerit.e. ore and yein
quartz with pyrite, galena, and
-. . - -. . - - -- - -- - . - - -- - - -- - - -
- - Select - . -. . sample - - - from small -. - - - dumps. -
Vein quartz.
- - - -. - -. . - - -
--
- Select sample from ore pile.
- - - - -- . -- -. - - -- - - - - - - -- -
Vein quartz with limonite and
- - - .- - - - - - -- - - -
yellow-green - - - to green arsenate(?).
Winnemucca district
Quad: Winnemucca West 7%'
Select --- sample -- from dumps of two - adits
in canyon. Calcite vein matter,
Sec: 23 T. 3 6 N N: 32E- - . - - -
UTM : 4537030
1 - N t
gossan, - and sparse vein quartz as well
Name Unknown 0434630 - as a yellow-green to green arsenate(?)
Winnemucca district
Quad Leach Hot Springs 15'
Sec
35 31 N 38E
T - : --
2361 Quad: Mt. Tobin J 5' -
sec: l4 T 30N R. 38E
-2362
2363
UTM: 4 4 8 ( L Z L
Goldbanks Mlne
N E
0442800
Goldbanks district
Quad: Jt. Tobin 15'
Sec: 6 T 30N 38E
Pronto Plata --
Goldbanks district I
Quad. Antler Peak 15'
18
33N RL 43E
Sec:
T:
UTM. 4509075 N 0485200 E
Marigold Mine
Battle Mountain district
-
- - . - - - sample
-. Select -- from - --- - dump - - of - - shaft. -
Vein quartz
--
with pyrite, tetrahedrite,
- - --
-. and - - stibnite. . - - - - -- -
S e t 4~rnp-samp la..V.ei_n quar t z w i t h
- limonite and - spotty, green oxide-
-- .- - - -
cop_r>erm i~erals,. -
Grab sample from south pit. _.Silicified
and opalized rock (opalite) with very
sparse cinnabar(?)
Select sample of op-alite (silicified
tuff) from dump of open pit. Opalite
.A
contains f ine-grained cinnabar.
--- --A-
d --
- - ~ -
- Grabsample from open pit wa._ll. Red,
-~
iron-stained sandstone of the Battle
Formation.
--

Sample Number
2364
Ouad:
Sec
Location
Antler Peak 15'
18
32N
T. - -
Sample Description
44E
- ... ~
Golden Era Group
ouad
Set
Battle Mountain district
Antler Peak 15' -- ---
3 6 3 3 ~ 43E
T -- R ----
UTM 4504000 - N -E 0493350
Morning Star Mine
-- - -
Battle Mountain district
(had. Rose Creek 7%' . - --
UTM: 456230 N B~&E
Ten Mile Mine
Ten Mile district
Ouad: Rose Creek 7%' - - - - -
Sec: 28 T: -3 6N - R. 36E
UTM. 4535830 N 04212_90-.. E
Golden thythest Mine
Ten Mile district
Ouad:
I I
Rose Creek-7~
Set: 22 . 36N 36E
1 . - R
UTM: 4536330 N -0422160 E
Eldorado Mine
Ten Mile
Cuad: Humbold t S a1 t Marsh ~151-..._-
Sec: 7 : 24N A. - 36E
UTM. 4 4 2 4 6 5 - N ~W~ZJ.QLE
Treasure Box Mine
Table Mountain district
Quad: Humboldt Salt Marsh 15'
Sec: 31 T: 25N .- R- 36E
UTM: 4677550 N!?%!??oL~
Lovelock Mine
-
Table Mountain district
Quad: Humboldt Salt Marsh 151
Set. 35 T :
25N ,. 36E
UTM: 4426875 N 0423000~
Nickel Mine
Ouad:
Table Mountain district
Sec: T : R :
UTM. N E
-~~lect-sam~Le._ f wmdumpl-S poctyvein
-quartz ..with. .l_im_onjLe,-.arseno~~ri ce
and - chalcocite.
-. . - - - - - - -. . -- - -.
Select sam~le from dum~ of adit.
-S-e.le~_.t .~samp_le~f~ve__fro_m~expos_u~e
- -
35m
-
southwest of headframe. Milky
-- - - - - - -- -- - - - - - - -
vein quartz with clots of limonite.
-- Crab - -. - - . vein - matter from outcrop. in
- - -. - . . - - .- -. -- -- .- . - - - -- -
--
small
-
prospect pit. Vein quartz
- - . - - . . . - - - --
with limonite boxworks and slight
manganese-oxide stain.
_I;-rAve in -gua2 z-f_rom__s_maalIpr_omea
pit. Drusy vein quartz with limonite-
coated ca-~ities , manganese-oxide
--- -. . - - - --
. .
_s5.s5.a_ml_n&-
Select sample of limonite-encrusted
mafic volcanic rocks.
Limonitic material as fissure fillings
in maf ic vo-kanic . rocks.
Vein matter from shear zone.
- - - - - - -- -

Sample Number Lccation
Sample Description
- -
1
Cuad : Win-nemucca-ltn-_ 7 E _-
Sec: 1 - - T ..36-N_-_ 2 36E
UTM: 4541 42 5 . I -
T e n n i n p
0427000 ,
District
Pansy Lee Mine
auad: Binnemucca Mnt- 74 --
Sec: 1 - r -26-N- R
Ten Mile Mining Dist-rict
Pansy Lee Mine
Quad: Winnemucca Mtn 74-
Sec : 12 - 1 . -- 36N 37E
UTM: 4539085 04361 00
A c c a D l s t r i c t
e . .Go1 d k11 Grou~
Quad WBSCO ?A
Sec 7 T 36N R 38E
UTM 4540460 N P437230.-
Winnemucca District -
Pride of Mountain Mine
Quad Winnvnucca Mtn 7A
Sec: 1 T: 36N R 323_
UTM: 4451320 .- N 04361 70 E
Winnemucca District
Shively Strike
Quad: Silver State Draw 73 .
UTM: 4.5601 20 N OL21500 E
Awakening District
Silver State Mine
Quad: Silver State Draw 7&
Sec: 9 T 38N _ R: 36E
UTM: ~560300 N OL21280-~
Awakeninp District
Silver State Mine
Quad: Bloody Run Peak 7h
Unnamed district
Jupiter Group
Quad: China Garden 74
Sec. 19 T: 39N R. 38E
UTM: 4565180 N 0437480 E
Shon District(?)
Basque Mine
--
Description
M ~ ~ s i v . h i g h g r z i - m U ~
Te t rah &-r~i_t_e_ ,-s phaJ ~ .rita,y.rit e
- arsenopyrite,-chalcopyrite -. -~ -.
from
d.um.p.-.ne_a.rth_e-.mainshaf t
Corngosite of the major mining
dumps - consiting of all quartz
- . - - - -- -
vein material with ... tetrahedrite,
-- arsen~pyrite! -
~~rite. chalcopyrit~
sphalerite mostly from veins.
- S eLec tcd -Lr oaLkm-p-b~-Uhza i n
- shaft..highly oxidized vuggy - qtz,
---- and gouge and silica with clots
-
of metal sulfides and gold (?)
-- Selected from dump ... iron stained
- - - . - - -. . - -. - - . -. .
qtz in sediments near the volcanic
-- contact. - -- -
Chipped from vein in open-stope - -
-- calcite-quartz veins with minor
visable sulfide -- and possible
gold
-- Chi~p_?sj from major vein and selected
from dump in main adit..
white quartz vei-n with pyrite,
chalcopyrite and posseible silver.
Upper-m.i~ w o r k ings-clin e ,
chipped from vein and selected
from dump ... large qtz vein in
outcrop with extensive pyrite
and ~osssibls ~013.
Selected from 3ump an3 the lower
prospect..moly, pyrite, and silvex
-- sulfides in a white qtz within
the granodiorite.
Sampled from dump and area aroun3.
millsite..quartzs vein with possfree
~ l and d minor sulfides

Sample Number
2383
238L
2386 .
Sample Description
,
Location
Description
Quad 4m-e2ak-- 15'-- -- Sample s e L ~ c U f r m ~ p d
sec - 10
_ T 4O_N_-- R BE_-- a skarn --- zone with minor epidote
UTM 4476080 %I O_IIL&UJLE and possible tungsten.
Shon District - -- - -- - -
Tungsten Propects
~ u a i PXrLlliLl+ik 15' - Sd~cierl f r o m n p i ~ z p s d
Sec 10 i 4 0 2 R -18L- - vein in the main adit near the_
uTM 1579020 - N QL42hQn-~ mill..the qtz material carrid
I Sh-nistric t
Mary Clough Mine
Quad: wakeni in ,P Peakz&
Sec: 3 T: I, ON- R: 3hF,
UTM. L571780 N Q42072Cl E
Awakening Di~trict
Mayday Mine
~uzd: Auak2nh-g Paa k 7d 1
Sec. 1 T. R 3-5.F.
UTM: 4570350 $1 0419260 E
rt - +
-p~~ciL~,-ch;rp~t.p~sibl e .
silver sulfides..also skarn zone
Selected - from the gloryhole near
So. workin~s..qtz - vein in older
seds..that were mined for gold/
silver
-
-- - - --
-s~~uu-wL~-~headframe..qtz
material without
viable mineraliztion that w a ~
reported to carry gold/silver
Quad: -- Selected from dumps and newly
Sec: T: 39N R: -36E exposed veins..lots of iron oxide
N 0419200 E with qtz veins but very littlz
mineralization..reported
~ ta be
2388
Havalau Mine
~uad: Sombrero Peak 7h
gold.
-. A small
. -- - . -- - shallaw -. incline on an
Sec:
UTM:
23 T: 39N R: 35E-
4566370 N 0-41 5740 E
awaken in^ District
exposed portion of the granite
the qtz veins carried no viable
mineralization an only minor Fe
Pickhandle Mine
Quad Trident Peak 15'
Sec 39 T -47N R -3Z-
UTM 4642250 0382750
Unnamed district -
staining.
Workings are ba,dly caved mineralization
maybe included Moly..with
- possible - AuIAg.. but it would be
minor at best ... workings are very
small
Quad TrirlPnf P 7 ?'; I -- Very small. mine workin~s sample
Sec 6 T -4.66~ R 3 2 ~ : from bullatz veins with minor
UTM 4638600 N ( L u 2 2 m - E iron oxides and no visable miner-
I Unnamed iliskkta I alization..
Slater Mine
-.zi%L Quad: Trident Peak 15'
Very small mine with_yp " .pLmiU.
Sec 6 L ~ N 3 2 ~ Sample from dumps and pile of
UTM 4638550 N 0381350 E concentrates of qtz and contact
Unnamed district
Jensen Mine
vein material.

Sample Number Location
Sample Description
Quad .Ji~x~PamRzs.-Sa~ut.h2~L-
~ e c 3 3 T 3 2 N ,I 231-
UT'4 4393700
M 0393000 F -
Unnam BLLZLS!X~C~-_ --
Unnamed adits and inclines
Ouad:
Sec: - T: . .
UTbl: '4 - E
Ouad:
Sec:
Quad:
R.
-
- I: - R :
-- --
Sec: T : R.
UTM: N E
Quad: .-
Sec: T: R :
UTLl: N E
Quad: --
Sec: T: . R:
UTM: N E
Ouad:
Sec: T: R :
UTM: N -E
Quad:
Sec: T : R.
UTM: N E
Ouad:
Sec: T: R :
UTM: N E
Description
-Chip pdfrnmexps~L& in^
. -. calicified - -- - tuffs that was prabab-
-- ly - - - a former .- hot spring..sorne
sulfur -

Sample Number
Locatlor!
~ e: c _Unsur.vey_eA- 7 - R
Sample Description
UT?W!. 678650 :; Q29Z4Q.L-!
SED Claims
I I
2402 Quad -Kumiva - Peak 15' -- I Sample
~ e c Unsurve~ed _; fi -- -
4474875
UTM - N 0296225 -t
San Emidio Hg-Sulphur
Quad Kumiva Peak15 ' -
Unsurveyed
Sec - - H
UTM 4476100 N 0298020 =
?south end SED claims
0~~3. Smith Canyon 7 1/2'
Sec
uTM
Unsurveyed
4492510
T
R
- '1 0285850 -. -_.r. -
Cottonwood Canyon Prospects
Cottonwood Canyon district
aczd: Leadville 7 1/7 '
Set: west edge 9,16 T. -- 37N .. -. 23E -. --
u:!,: 4552030 0298040 c
Prong claims -
Leadville district
Quad, Division Peak 7 1/2'
Unsurveyed
Sec .-
UTM: 4550560 '4
R :
0308680 - c
Unknown
Donnelly District
--
auae: Squaw Valley 7 1/2'
NO. edge, 16,17,: 34N
Sec:
~
R: pp
2 2E
uTM: 4523715 N 0288920 E
Copper K i n g , --
Deephole District
Squaw Valley 7 1/'2
set: E,C, 8 . 34N : 22E
Description
Brecciated outcrop of altered
. - - - - - - - -
rhyolite. Makes up spine of small
-- . - . - -. -
ridge.
-- -- showe-dHg & sulphur. Collected
at most northerly group of trenches.
Taken --.- from dump of old adit. Vein
may be along contact between meta seds
on the south & tertiary volcanic
on the north.
- - -- . - - - - - . -
--
White-quartz vein associated with-
rholite dike in meta seds.
-
Samgle from dump off main workings
in district.
rfi-i_te-Fe,s tained quartz veAs in
a granodiori te . - - - --
:ample with Cu oxides is a pr_a-aodiorite
Couldn't find any mineralization in
fGoTKfels aPtG cut up hill with cu
--
oxides is in hornfels.
--
Taken from dump at mouth of adit.
UT,: 4524280 N 0288650 E
Monroe(?) Claim
Deephole District
-.
Squaw Valley 7 1/2' -
Taken franulump. Heavily Fe-stained
~ec: NE/4,8_- T: 32N R: -L quartz vein material, vugav.
UTM: 4524880
Silver Bell Mine
'N n 2 8 8 6 Z L ~
Deephole District

Sample Number
2411
I UTM
Sample Description
2 4 38N 22E 1 vuggy withspecks& veinlets of Fe
Sec --. --- R -- --- - --
4559320
UTM .. 42939950 -E
- Hog Ranch Gold Prospect
Location
- - .- -- - - - -- -- -
u:s,q: 4483800 - rr 03015t51-.i
Stormy Day Claims
Cuad:
Description
oxide. Sugary texture. Outcrop
.- -. ..
along ridge top.
-- - - - - ---
Dump . sample of tact$& Adit ajprox-
- -- -- -
Pendant(?) approximately 200 feet
vertiCaTiy above adi t mouth.
Quad Kumiva Peak 15'
c,, Unsurveyed NE , Tif Tu~ d
, imately 200-300 feet long with
t
Hooker District
Visible moly in sample.
Awakening Peak 15'
Milky white, Fe-stained quartz vein
SE/4,SW/4, 19, 40N 36E material within aquartzose phyllite.
- - - -
Sec: -. -. -.
UTM 4575000 - 81 0418125 E
Humboldt Mine
Awakening District
-
ouad: Awakening Pgak 15'
Difficult to obtain a good sample
1 Sec. C,36 T: 40N 5 35E mining currently ongoing & old
~ - - - - - - -
,,,: 4572400 -- 0416375 workings covered up.
.i - -- -
Jumbo Mine
Awakening District
Quad: Diaster Peak 15'
s2c: SE/4,SW/4, 9 ,. 1 45N 34E
3--
UTM: 4626725
Eloonligh t Mine
Unorganized
Quad: Dias ter Peak-_l5 '
>J 0LQ372->-~
Sec: N,C, 28 - T- 4 6N 9: 34E
UTM: 4632650
Unknown
% -&.Q~~E_-E
Unorganized
Quad Diaster Peak 15'
SW/4,SW/4, 9 46N A 34E
Sec
4636400
UTM - N 0402500 E
Iron King Mine
Diaster Peak District
Quad Awakening Peak 15'
SE/4, 21 47N 34E
Sec
UTM 4643200
Apollo Claims
N CI4-E
Awakening District
King Lear Peak 15'
set: Unsurveyed T: R.
4 5 4 6 2 Q 0 N UUULE
Unknown
Red Butte District
Collected from fault zone in which
uranium was mined.
Picked off of dumped.
- --
?Coarse to fine grained andesite?
approaching diorite-granodiorite.
Select - - - - sample - -- from mourh of adit.
Contains
-- much pyrite.
Quartz vein material white20 grav
- -
in color.
~~11ecredfrnmt~lzagePilMlastlv
volcanic breccia & very glassy .
Believe cinnabar can be observed on
some pieces.
Collected -- from fau-at-mnh
of adit. Mostly malacite, azurite
.-
- -. .
but may be a trace of Zn oxide
-
(smithsoni te) .

Sample Number Location
- - -
auad KLngLear-Peak-1-L
Unsurveyed
Sec . r . R
Sample Description
4546350 0364625
UTv N E
Carbonate Claims
Red Butte District
Quad Jmgc -ULY
Sec Unsurveyeed _ _
UT?rl -- 4529880
Pi 0380140
UnEi~n
unorganized dis triz
Guad: Jungo 7 112'
MJ/4, 13
Sec: T . -
35N
. G
31E
UTM: 4529580 N 0377660 E
Unknown
Unorganized
--
Jungo 7 112'
Sec:
UTM:
MJ/4, 14
4529450
Unknown
Unorganized
r. 35N
_ 1
9 31E
0375420 - t
Quad: King Lear Peak 15'
Sec: Unsurveyed T: Fc
UTM:
4550800
N 0369550
Unknown
Red Butte district
Quad: Ju"g0 7 112' -
So.,C, 10 . 35N
Sec: I - R . 3lrd r -.---
UTM: 4530320
Unknown
i _0.37433_--~
Red Butte ~istrict
Quac. &ngo 7 112'
Set SW/4,10 T : ~ N . R X -
UTM. 4530430
Marv Claims
Red Butte district
N 0373840~
Sugarloaf Knob 7 112'
Unsurveyed
Sec
UTM
R: --
4530510 N 0373500 E
Ole Boy
Red Butte District
Quad. Donna Schee Peak 15'
Unsurveyed T:
Sec: R.
UTM
4549400
Krug Mine
Unorganized
N
0387775
Contact
. . . ~ zone
Description
--. between ~- diorite which is
highly chloritized & limestone which
.. - -- .. - ---
has been altered to jasperoid at
contact. Cu oxide occur in brecciated
- -
zones along with calcite.
Quartz vein in meta intrusive. Minor
mineralization. Vein approximately
. - - - - -- -- -
- 6" - wide. Visible galena.
. - . - --- - -- . - . - -- --
Taken from dump. Quartz highly
-. - . .- . - - - --
Fer_stai-ned with m l , n w y n t s of
galena visible. Quartz also somewhat
vuggy & brecciated.
---
Select sample of best looking auartz
material.
- Select sample from one small cut.
Cu oxide -- abundant , malachite,
azurite, chr~socolla.
C_o/le_c ted-frnm4Ymp af i ncI i n ~ a .
Mi 1 k Y -w-hidequ artx ,q intrusive.
Taken from dump at mouth of adir,
- Brecciated white, heavilv FP-staineh
quartz.
Taken from dumpof vertikaLstnpp-
Fair amount of oxides on dump.
White quartz vein material. .
--

Sample Number
quad: p~
Location
Donna Schee Peak 151--_
Unsurvey ed
Sample Description
Sac. 7 3
UTU:
4549975 0387000
- - E
- - . - - . --
T: fi _____~
UTM: 4544775 N 0378025 i
Unknown
Fe oxides, minor Cu oxide.
- ~
-
Description
..~ ~
2429 I
Stinger Claims
Unorganized
Donna Schee Peak 15'
I Sample
Unsurveyed
- . of calcine . . dump from retort.
Should-be-panned & rock fragments
assayed for Hg.
.-.. ---- --
2432
Red Butte? District
Zuad: Hob0 cil.tlJ!!I7' - Taken from high gade dump. Chrysocolla,
-. - .-
I ~ec: SE/4, 21 T: 40N - R. llE I
UTM: 4575150 :i 1127_6181).! 1
Harrison Grove Mine
Jackson Mtns. District - i
Ouad ~obo
malachite, azurite seen as well as
- -- - - . - -- -
pyrite and chalcopyrite. Also some
-- - - - - - - - -
black oxides present.
-
Canyon 7 117' i Taken from .- .- dump at Eastern most adit.
Very little quartz vein material
UT,: 4574950 1.1 --
Unknown
0372800
- .- - .
Jackson Mtns. District
Hobo Canyon 7 112' - --
sec: NW/4, 29 T: 40N_ a: -31E--- ~
UTM: 4574250 -- \j O37148OpE
Christiorssen Canyon Prospect
-- - - -. . - - - --
I Jackson Mtns. District
Ouad: - l e e k 15'
set: S,C, 29 T 40N R. . 32E
- Ii _Q2816QL-~
UTM: 4f73700
Iron King Mine
Jackson Mtns. District
Quad: Bottle Creek 15' -
s,. w,c, 11 7: 39N R. 3 2E
4569100
UTM: -- -- N 0385625 F
Bold Claims
Jackson Mtns. District
Quad: Bottle Creek 15'
40N 33E
Sec: NE/4,7 T.
UTM: 4579450 N 0390150 E
White Peaks Mine
Ouad:
Bottle Creek District
Sec: - T : R :
UTM: N
I
!
I
here as compared to second adit where
- - - - - - - . - -
all of dump is quartz.
Collected from bottom of small dozer
-. - - . - - - . - - -
cut, minor quartz veinlets on some
fracture. Rock fairly heavily
- - - - - - -- - Fe-s tained. -. --
Magnetite with ginnor meta volcanic.
Meta volcanic altered to chlorite/
--
epidote.
---
Gray-white - - . - . - - - - . quartz - . -- . -- enclosed -
~ - . bv hornfels
which is heavilv Fe-stained. -p -- - -
-- -
Dike material at base of dump. cut bv
--
veinle ts of calcite, in which cinnaba~
occurs. Veinlets are knife edge to
approximately 1/8" wide. Diabase is
hard, dense, fine grained with a
-
greenish cast.
Threw in sample of country roe -
Rhyolite.
-

Sample Number Location
eY
Sample Description
ad : - Bottle Creek 15' . - -
nsurv ap rox.
sec ZEA.,. 36.~ r -4U-__
-
; .XE-.-
UTM 4581325 .
Niebuhr Mine
\i 0388200--E
BotTI-eeCTeek District
~uaa: Bottle Creek 15' . -
Sec: SW/4, SW/4- - 7 ,. 40N 3 3E
UT,. 4578325 0388825
\1 - E
Red Ore fl
--
Bottle Creek District
Bottle Creek 15'
SW/4, 16
Sec: 4 ON 33E
T: - R _ _
UT,: 4577100 1 - E
0388750
L MeAdoo Mine
L
bo t t i e CFe>lcgEi7Etpp
oczc Bottle Creek 15'
Sec: 2 W C -8 - T. 4 ON R: 3 3E
UTM:
4578900
. i
0390900
- .-c
Baldwin Mine
Bottle Creek District
-
Quad: Quinn Riv-er Crossingl5l----
Sec.
Unsurveyed 42N
--
R 3 3E
u;,,: 4600100 ?,I 0392150 E
Red ArrowlHydragyra
-.
- -- -- --
Unorganized
uuze: Denio 15'--
Sec: NE/4,28 T: 47N R _31E _
,,,,: 4642375 - N 017522-5p~
Wilder Creek Ranch Cu Prospect
Unorganized
Quad: FoxRange 15'
SW/4, 2
2 1E
Sec:
T: 29N R.
4475950
UTM: - N 0280000 -E
Wild Horse Canyon Mine
CoTt%K6533is tric t
Quad. OS~;OO~ Mtns. 15' -
set: E,C, 10 T 37N ,: 40E
UTM: 4549475 N 0462200 E
Unknown (Stone Corral Prospect)
Unorganized
Description
B leac heb. andFc.s ~.h!o!iit_eI-
Some very heavy Fe/Mn(?) staining.
- - . - - -. - -- - - -. - - - - -
No
- -
cinnabar
-
observed.
- .- . -- - - - - - . - No mineralization observed.
- . . . - - - - - . -.
- ---
Well weathe_red. basic dike. very hard_
at
-- -. surface - - -. . - but .
- -. approximatsly 2 feet down
weathered and altered ? to verv soft
- -- - --
porous rock. Rock full of ~lasted
-- - - A - - - -- - - -
FeOx and calcite plus veinlets of calcite
Basic dike with minor Fe-stainLng and
-. - -- - - -- --
calcite along knife edge fracture.
No mineralization observed.
- - -- - . . - -
--- we=
Heavily -- - - -- -.- Fe-Mn stained rhvolite
fractured.
-
No mineralization
-
observed.
-- - - --
Highly Fe-s tained, fractured h.~si.--
ated rhyolite with some andesite. -
Minor quartz veinlets.
No mineralization observed.
Sample is a mix of altered r~cks that
are mineralized. 3 r-VD~S.
Numerous - varieties Cu oxide.
Quad Idaho C a m y o _ n - l r _ l . ~ ~ ~ - Taken from shaft dump highly sheared
- - -. -- - -
Sec NE/4, 18 T 4 2N 8 A- 2 8E - rock with lots of er oxigs .
UT, 4602800 N E 0349300 Cu oxides.
Roberts Copper Mine
--
Unorganized
Dark gray streaks in quartz vein
material. Maybe sulfides. Verv fine-
- --
grained quartz is gray-white in color
-- -
with numerous fractures.
Grab rock.
- Sample collected from shear zone &
- remains . . - - of -- -. old - dump at foot of stamp
mill. No mineralization observed.

Sample Number
Sample Description
Quad: Osaood __.Ztns..15'
approx. C, 5 37N R 40E
Sec. I -
UTM: 455LQ2L h 0458525 c L
Unknqwn -. .--
Unorganized
Quad: osg00d Mtns. 15' -
Sec. W/4, 17 -- 38N 40E
F!
UTM: 4557850 0458275
N
"Chink" Claims
Dutch - - Flat
Quad: -0~g00d Mtns. 15'
Sec:
SW/4, 9
T .
38N 40E
R. --
uiM: 4558650 N 0459700
Ouad
Unknown
Dutch Flat
Sec: - T. R --
UTU. ti . c
E
oudd: Osgood Mtns. 15'
NE/4,~E/4,17 - 38N
Set: I :
R, 40E
UTM: 4558400
Unknown
N 0459125
~
sec: m/4. 9 T: .38N A: 40E
UTM: 4559775
Unknown
N 0459650
Dutch Flat
Quad: Hot Springs Peak 15'
_z_ -
See. .Unsurv. - T: ,40L R. 40E
UTM: 4577075
Cahill Mine
N 0461175 E
- -- -
Proverty Peak
Quad:
Sec: T' R :
UTM: N E
Quad: H O ~
Sec:
~fiings-peak 15'
Unsurv . T : 4 ON 40E
R: --
: 4577300 N 0461650,
Hapgood Mine
Proverty Peak
-
Description
- Small Hgmine with small production.
- . -- - -- -
No mineralization observed.
- - . . - . - - - -- - - - - - - -
-- Taken -. - - - in -. - Sodaris Canyon in area of
most prominant "placer" workings.
. - - -- - .-
No mineralization observed.
-- --
- Taken - .- -. . - - from -. dumq - of inmned shaft.
-. Shaft -- - - - - may be 200 feeueep. Ei~tire
dump composed of Fe-oxide material.
-. - . - - -- -
A mixture of hornfels, altered
intrusive & quartz vein material.
-- No -- mineralization - --
observed.
- 3 a k e ~ f x o ~ d t h s i d e E 1 0
Gulch. appro xi mat el^ 18" wide quartz
- vein - in out crop well Fe stained.
- -
No mineralization observed.
Small dump along_-south side of road-
- -. -- --- --
up Spring Canyon. Heavily Fe
-. - -
stained material.
No mineralization observed.
- Taken -- - - from -- - ore - dump above furnace
building. Medium gray colored
- limestone - - - - . -- - with numerous quartz/calcite
veinlets. Cinnabar - - . - - occurs along
fracture surfaces associated with
VPinl&~,
Ouartz-=inletsinaix t lire oE
quartzite & hornfels. Quartz veins
milky white. Trace Fe oxide.
Trace Cinnabar.

Sample Number
2452
Location
Sample Description
Quad Hot Springs Peak
- --
15'
- - --
Set ~ n s u r ~ _ i , - 4PN- R 40E
4577750
_ 0461050
UTM pppp .
Turillas Mine
-- - -
Proverty Peak
Quad JbL.Sg~~ringSPeak-W--~
~ e c Unsurv. T -
40N ;kOE
UTM 4578325 N ----.- 0461325 F
Wholey Mine (?)
Prover ty Peak
Quad Hot Springs Peak 15'
Sec SE/4, 34 41N R 4 OE
UTM 4581675 0462750
P-3 Claim Group --
Provertv Peak
Quad Hot Springs Peak 15' -
~ e c S.C. 26 T 41N R 4OE
UTM 4583000 i 0463950 E
Unknown
Proverty Peak
Quad a t l o 7 1/7'
Sec NW/4, 28 T 3%- R 35E__---
UTM Projected: 4535630 b1 0411000 5
Quad:
Atlas Mine
Unorganized
Sec: T: R:
UTM: -- N --E
Quad :
sec: N,C, 23 T: 36N R. ?4E -
UTM: 4537500 N 040523.t~
Blue Claims
Quad:
Unorganized
Sec: T : R.
UTM: N E
Quad:
Sec: T : R.
UTM: N E
. Collected - from mouth of adit. Meta
sandstone cut with numerous veinlets
- - - - . - - - . - - . - - - - ----- - - - - - -
of quartz, milky white.
- Nominerali-2-at ion observed.
- -. Collected - - - - . from dum~. Material
- - - - may have come from fault zone.
-. - - . - - .
Dark brown, rich looking Fe oxides.
- - Mineralization - . .- - . - - - Cu oxides.
- - -
-Quartz.yein 1'-7' wide in meta se&
- running.--NE along ridge top or just
- off . to the south. - . -. . - --
No mineralization observed.
-
.-.Old- praspert--pit, in milkv white .-
quartz vein. Yay possibly be a
-. continuation - --. -. - -- - - - of -- sample - - #2454.
- No - - mineralization .-. -- - - -- observed.
-
_Taken_fram_dnze~~~Lrlltgn idsidp
-- of - - ridge. - - -- - Cut exposed of gray-white
quartz vein approximately
- 6"-8" wide
in a heavily Fe stained phyllite.
Minor granitic dike material lvin~
around. - -. Did not-see it in place.
No mineralization observed.
-Me ta-_seds,mos tl>Ldalam-ith
- heavy -- Fe oxides & quartz vcnlets.
- Hi.hlv - fractured yellow. orange. red,
brown oxides. - -- .-
No mineralization observed.
-

Sample Number Location
Sample Description
Quad: Imlay 15' --
UTM
Quad:
4492750 N 0395250
Florida Canyon
Irnlay District
Sec: T : R :
UTM: N i
Quad: Irnlay 15'
~ec: C2 T: 31N R: 33E
UTM: 4492650 N -1.075~
Florida Canyon
Irnlay District
Quad: Imlay 15 '
Sec: 2-11 on sec. .T 31N R, 33E
1 lne
UTM. 4491975 0395175 F
Florida Canvon
Imlay District
aUad: Imlay 15'
~ec: 2 T: 31N R: 33E
UTM: 4492150 N 0395050 E
Florida Canyon
Imlay District
Quad:
Sec: T: R:
UTM: N E
Quad: Inlay 15' -
see: NWkNW% S12 T: 31N R: 33E
UTM: 4491800 N 0396425 E
Florida Canyon
Imlay District
Quad: Imlay 15 '
: 7 near Twp bdy. 31N R, 34E
UTM: &gJ&25 N 0397975 E
Nevada Humboldt Group
Imlay District .
Quad: M~v 15 '
e : NE% 1 T: 31N ,: 33E
UTM: 4492875 N 0397600 E
Starlight
Imlay District
Description
-- Chip.
2501A - Silic, quartz stockworks in
Grass Valley shales.
2501B - Banded quartz vein Madre Lode
- .- . . . --
silicification, argillization. Au in
O.Ox range.
Chip in adit.
Argillized Grass Valley Fn shale.
Argillic adjacent to "Sinter Vein"
Chip in cut.
Grass Valley shales adjacent to
Pegagus hole 39 - high-grade Au 0.x
ozlton. Silicification. Au-PeOx.
Samples by drill hole-Hum 2249. -
Chip across 10m cut. Grass Valley
phvllite site of materiaifor 10,000
ton pilot leach. FeOx argillic, quartz
veinlets. Au.
Twosamples :
A - is maroon ~hvllite
B - is shattered vein quartz.
~raboutcro~: ~rass~valle~ fm. pelite
silic & quartz veinlets. FeOx Au?
Grab composite shaft & adit dump.
Koi~oto rhvolite. Silicification~
stockwork veinlets ~vrite. vein
quartz.
Upper Prida limestones. Crystalliza-
tion, quartz calcite lenses, FeOx,
minor CuOx.

Sample Number Locat~on
2508
2511
2513
I
Sample Description
Quad Imlay 15'
Sec- Nw$Nw% 7
T 31N R 34E
U T ~ . 4492400
Starlight Open Pit
Imlay District
Imlay 15 '
:I - 0398075 E
Quad:
sec: 6 ti 7 T : 31N , 34E
UTM: - 4492550
Lakeview
N 0398750 E
Imlay District
Quad: Imlav 15 '
Sec: SEt 6 T . 31N R. 34E
UTM: 4492850 0398925
-E
Unknown- prospect
Imlay District
Quad: Imlay 15 '
UTM: 4491975 N 939800 E
Nevada Humboldt Group
Imlay District
Quad: Imlay 15 '
N E ~ 8
31N ,: 34E
Sec:
T :
UTM: 4492275
Unkno~~n
Imlay District
N 4400275 E
Quad: Imlay 15'
Sec: C 8 T : 3lN , 34E
UTM: 4491725 N 0399575 E
~nknown(w~ Claims 1383)
Imlay District
Quad: Imlay 15 '
. s4 12 I 31N >. 33E
UTM; 4490475 N 0397075 E
Piedmont
Imlay District
Quad: Imlay 15 '
~ec: NE% 13 T: 31N R. 33E
UTM: 4490075
Piedmont
N 0397300
Imlay District
Quad: Imlay '
set: wk 13 T: 31N ,: 33E
UTM: 4489800 N 0396800 E
DFC-6 Drill hole. Penasus
Imlay District
.
Descr~ption
Rump-grab ,_.PridaLhesmne+ Xaip&a._
Rhyolite
--
contact diabase dike.
pp - -- - - - - - .- - -- - I Pegmatitic quartz veins. Scheelite?,
I --
I
beryl., tourmaline quartz. -
- - .
Dump-selec t . Krida l i a n e , g r a n
& Koipato-rhyolite, marblization-
. - - - - - - --
muscovite, pegmatitic. quartz vein-
scheelite beryl.
- -
Dump grab. Quartz vefn Roipato
-
rhyolite porphyry vein NlOE 45'~.
Silic. sericite. tourmaline. Dyrite -
black sulfide?
- Grab dump -. 2511, chip outcrop 2511
. Prida limestone. Koipato rhyolite.
Pyritization, sgic., quartz veins in
rhyolite jasperoid I'rida.
Dump grab. Koipato rhyolite. Vein
quartz, tournaline, rare galena.
Select chip vein. Koipato Group
rhyolite. Sericitic vein quartz,
sparse galena, pyrite.
grd, Prida limestone-diabase
quartzn. Quartz vein, stockworks
quartz, fluorite.
-b. W a t o eroup rhvolite
porphyry. Quartz vein, fluorite,
quartz .
Com~osite cuttings drill hole. Prida
Limestone. FeOx.

Sample Description
Sample Number 1 Location I Description
25 17
2518
2525
Quad: UAV 15'
set; SEe 13 3 1N 33E
T. - RR.
I i
N 0397275 E
D.H. 4489450 BFC 13-4 Pegasus
Imlay District
auad: Tmlay 15 '
SE4 13
Sec:
T: 31N ,:
3 3E
I Florida Canyon Project, Pegasus
Imlay District
Imlay 15 '
I
NE* 24
33E
Sec:
T: 31N ,:
UTM: 4488350 N 0397350 E
Valerie Fluorspar
Imlay District
~uad: Imlay 15'
2 4
Sec:
UTM; 4488075
T: 31N ,:
33E
I
Valerie Fluorspar
Imlav District I
Quad: Imlay 15'
0397300 I
: SE 4 25 T: 31N R: 33E
UTM: 4486175
Blackjack Mine
Imlav District
N 0397500 E
Quad: Imlay 15 '
SE 4 25 31N ,: 33E
Sec:
UTM: LhRhl 75 0397500
Blackjack Mine
T:
1 Imlav District
Quad: Imlay 15 '
I
NE 29 31N ,: 34E
I IJTM:
Sec:
T:
UTM: 4487775 N 0400150 E
Star Peak Mine
Imlay District
Quad: Imlav 15 '
NE '?; 29 ,: 31N 34E
Sec:
UTM: 4487775
Star Peak Mine
Imlay District
Imlay 15 '
N 0400150 E
SW % 19 32N R: 34E
Sec:
I~dlay 4497175 Placer
Imlay District
T :
N 0398825 E
Hole BFC 13-4 cuttings. Prida
limes tone. oxidized & carbonaceous.
--
B-13-1 D.H. cutting. Prida Limestone.
Oxidized & carbonaceous limestone.
Drill hole BFC-24-1-cuttings
Prida limestone, oxidized & carbonaceous
Chip across pit face, Prida limestone,
fluorite, silcification, quartz,
Fe oxides.
Ore-bin grab jasperoid. nossan. Prida
limestone. Silicification, calcite
veins. Iron oxides, Sb oxides?
Ore bin select. cinnabar. Prida
limestone. Calcite veins, recrystal-
lization, cinnabar, marcasite?
Select dump vein, Prida, arkose,
argillite, jasperoid, quartz vein,
pyrite, sphalerite, covellite.
In
jasperoid argillite, lower Prida.
Arsenic & antimonv oxides?
Heavv mineral in placer.

Sample Number
I Sec ~
I
Location
Sample Description
31-32 32N 34E I Formation. Silic, sericite, FeOx
T R . . - . x-
4494775 N 0400200 1 A"-
- --E -. .- - - - - .
UTM - -
Inlay Mine I
- - - - 1 _ -- -_ _ _ - ----
Imlay District I
Ouad. Imlay 15 ' - -- -- . Sec.
31-32 32N
. _ R
34E
UTM: 4494975 - N - 0400250 F
Imlay Mine-
Imlay District
had. Imlay 15'
Sec 31-32 32N 34E
r - a
UTM- 4494975 E 0400250
Imlav Pline
Imlay District
auaa Imlay 15'
Sec SW+ 31
T
32N
fi
34 E
~~~4,493925
Unknown
Imlay District
:10399225--E
Quad; Imlay 15'
UTM: 4 4 9 _ 4 2 2 5
1 M Claims -
Imlay District
hi ~~~86LE
~uao: -Imlay 15 ' --
Sec:
31-36
T. 32N R: 33-34E
UTM : 4494025
Unknown
FI 0398625_--_~
Imlay District
Ouad: Imlay l5 - ' --
Set. SE 22 . -
i: 31N R: 34E
UTM: 4488400 - J fk40365~0~
Pflum Mine
Star ~istrict
2533 auad: Imlay 15 '
2 2
Sec.
T :
2'i36
UTM. 3488650 -- N 0402500 E
Queen of Sheba
Star District
31N 34E
R: --
Quad: Imlav 15'
Sec:
American Base Mine ?
Star District
2 7 - T: 31N R -- 34E
UTM. -- 4487300 . 0402425 E
--
Descript~on
Ch.ip _4m_.t.rench,-G_caass_s_sVa11L~Em,~
phyllite. Quartz vein, FeOx after
. . - - -- . - -- - - pyrite, Au.
. . - - - --
Channel_-dumr,.mlite quartzxekxi
- --
stockworks, Au FeOx, pyrite.
- - --
Chip-adi~.-_Bump_grabL~
silicification, vein quartz.
- - - - - --- - -
.-- -- - -- --
S.e_1ect-du1np.~Ouartzite-ph~11i t9silicified
. - . -- - - - - qu_artz veins, Pb Cu, Sb As
oxides, pyrite.
-
P_r i d ~ ar c b qnates:caar_hgna c eo us,auart z
vein, silicified. FeOx pyrite.
- -
Prid-a.-~arbonac~eous Shaley li~gstone
FeOx, pyrite.
- D.ump.-quar tzveinele-
Prida clastics and rhyolite porphyry.
Quartz veins, stockworks, pyrite,
galena, sphalerite. chalcopyrite,
tetrahedrite.
S-ejectd.ump, quaz-tz. PridaJm.
sandstone & shale. Sericitic, quartz
vein, stockworks, pyrite, tetrahedrite,
-
jamesonite, sphalerite.

Sample Number
sac 2 - 31N -. R -~ 34E ...
' -4493550 - 4 0405100
Tehama Mine
Imlay District
Sample Description
-- - -
Quad: Imlay 15' - -p -. . - - ~ec: -2 T- -3.D P. -%.
UTM: 449355Q- bi -OU_O_O-.-E
Tehama Mine --
Imlay District
Quad: Imlay 15'
Sec:
Locat!cn
NW a 35 31N 34E
T. - R.
~TM: 4485650 - 0403850:
Bloody Canyon Mine
Star District
adad: Imlay 15 '
NW a 35 31N 34E
Sec: T: _ R:
UTM: - 5
Bloody Canyon Mine
Star District
:i n4Q3850c
auac Imlay 15' - --
Set
NEk 26
T
31N
R
33E
UTM 44867W y4 0395925 E
Star Mine
Imlay District
Imlay 15'
Quad - -- - --
NW Jt 26
Sec - --
31N , 34E
UTM 4486750-- N 0395925 E
Star Mine
Imlay District
Sec-
UTM:
SE )t 35
T:
4484275
standard- Mine
31N
N
33E
R -.
0395875
I m I a y District
Standard Mine
Imlay District
Quad: Imlay 15'
SE 35 , 31N ,: 33E
Sec:
UTM 4484275 N Dm815-~
Standard Mine
Imlay District
--
~ u m selec ~ - t . --K~i~aL~~~o-~~rh~%lit
flows & tuffs. Silicified quartz
chalcopyrite, sphalerite?
-..
- . ~
Cescription
- p~
Ogt_crop. Trida. FUI. clastics
s i . 1 . ic malchite.
- ~
if ied ,-~~_r_rt~-?r_ein~~~
t P ;
Select dump. High-grade.flow-banded
- - . - - -- -- -- - -
rhyolite. Koipato, silicified quartz
- -- - . . - -
veins, - stibnite, sphalerite, pyrite.
~um< -- grab. Veinquartz, koipato
. . -..rhyolite.
Silic, vein quartzi
-
stibn Ate, sphalerite, pyrite.
Dump-s el ocl-,-line-~LmeNatchePass,
argillic, silicification, pyrite,
sTT6iiTitte,--CCuoXides, Sb oxides.
D~ump-grab.Lim~t4ne,Xatch~a~
-- Fm. Some - - - sericite - - in quartz,
scheelite.
p-hyl-1ite:silic. Silicification -
jasperoid , Au, FeOx.
Pit grab .-.--Limestone, Prida?
--
j asperoid . --
Miscellaneous chip ore zone. North
it. Natchez Pass? limestone.
silicification, jasperoid, abundant
FeOx.

Sample Number
2545
L346
2549
Quad: Imlay 15' -
Set:
SE k 35
T: 31N . R.
UTM. 4484275 N _-E
Standard Mine
Imlay District
I Unknwon 4434500
Location
Quad: Buffalo Mtn. 15'
Sample Description
33E
Crrr. 1-2 T. 25N , 35E
N 0414450
I Table Mtn. District I
Quad: Buffalo Mtn. 15'
car. 11 . 25N . 35E
UTM: 4434350
Green Gold
N 0414150 E
Table Mtn. District
Quad: Buffalo Mtn. 15'
Sec: SW $ 11 T: 25N R: 35E
UTM: 4432975 N 0413100 E
Black Dyke
Table Mtn. District
Quad: Buffalo Mtn. 15'
~ec: SWk 11 T: 25N R, 35E
UTM. 4432975 N 0413100 E
I Black Dyke 1
Description
Jasperoid, Natchez Pass? limestone.
silicification.
Chip in pit. Shale?, acid leach-
-
silica, sericite clay, FeOx and Hg.
Dump grab. Quartz, hornfels. Some
sericite, quartz, FeOx, pyrite, rare
yellow scheelite.
Random chip in trench. Granite. shale,
acid leach, silica, clay, Hg, sulfur.
C h i D ) t r e n c h . e s o z o i c ,
acid leach, sulfur, cinnabar.
Table ~tn. District
Quad: Buffalo Mtn. 15 '
~ec: SWk 11 T: 25N R: 35E I
Rotary cuttings.
silic, argillic.
Granite. shale,
UTM: 4417875
Black Dyke
N 0413000 E
2551
Table Mtn. District
Ouad. B u f f a l o 1 5 '
~ec. 22 T: 25N
( UTM: 4430875
Cornish Claims
I Table Mtn. District
I Quad: Buffalo Mtn. 15'
R 35E
0412675 I
I I
(
Dump select. Mesozoic shale &
limestone. Gossan, quartz vein, gossan,
cerrassite, galena.
Bench in pit, 0.1 oz Au, Natchez
Sec: 16,17,20,21 ,: 27N : 34E
UTM: 4451900 N 0400500 E
Relief Canyon
Antelope Springs District %
Ouad: Buffalo Mtn. 15'
Sec:16,17,20,21 T: 27N R: 34E
UTM: 4451900
Relief Canyon
N J~~~XLLE
Antelope Springs District
Pass Fm. limestone. Silicification,
Au, Ag Fluorite, FeOx.

Sample Number
2554
2558
2559
25hn
Quad: A-
Sec:
Location
Sample Description
Buffalo Mtn. 15'
16,17,20,21 2 7N 34E
: - R
" 7 ~ : 4451900 E 0400500
Relief Canyon
Description
B~h.-.g~a~,O.r_OkS-o~Au~Sll ic . -
Natchez Pass Fm. limestone, breccia,
--.. -. . -. -- -
. silicification, - --. . - -. -- - -. Au, Ag, - Fluorite, - - - -- -
Antelope Springs
~uad: Unionville 15 '
Sec: 28,29, 32,33 T -- 28N
UTM fi456600 - -
N
--
a.
0400525 I K-spar, serici te,
Quad: Unionville 15'
28,29,32,33 T.
Set:
-
28N 9: 34E
34E
1
Nevada Packard
Pit grab. Main pit stockwork zone.
Weaver rhyolite, silicification,
- -- -- - -- --
Au, Cu, pyrite, chalcopyrite, mostly
Rochester District
(99%) oxides.
UTM: 4456600
Nevada Packard
Rochester
Quad: Unionville 15'
2
Set: 1 4 ,
- Pit - - chip - - & underground - -
chip, Weaver
rhyolite. Contact lode, sericite,
-
0400525 E K-spar, silicified, Pred oxide, some
- . - .- -- - -
pyrite, chalcopyrite, quartz,
stockworks - malachite.
Dump- select. Weaver rhyolite, Kol-~o
r: 34E
sericite, tourmaline, quartz, galena,
-
sphalefite, pyrite, tetrahedrite?
Looney Mine
Rochester -- --- District
Quad. Unionville 15 '
~ec: ma 18 T : 28N . 34E
UTM: 4460975 N 0397675 E
Lincoln Hill
-
Rochester District
Quad: Unionville 15'
28N R: 34E
Sec: 18 T:
UTM; 4459825 N 0397975 E
Buck and Charley
Rochester District
Quad; Unionville 15 '
set: NEk S11 . 28N R: 33E
UTM: 4462400 N 0395250 E
Rochester is trict
Quad: Unionville 15'
chalcopyrite?
--
m p
~ ~ 1 .Rochester s t rhyolite,
silicification, tourmaline, pyrite,
tourmaline sphalerite?
hP select. Rochester rhyolite.
silicification. ~vritizatiun. quartz
veins, pyrite, sphalerite, galena.
FeOx.
Dump-grabgrab P r ' d a F m , A & .
-- Jasperoid, quartz & jasperoid with oxide
Cu & tetrehedrite.
I Set: N E 9 ~
T: 28N R: 34E
- Dump grab. Rochester rhyolite.
I Silicification, sericitization,
uTM: 4462750
Plainview Group
Rochester District
0401700 E quartz vein. FeOx.
1 Quad: Unionville 15' Dump grab. Rochester rhyolite.
NE % 28
30N R: 34E Sericitization, quartz, pyrite,
Sec.
T :
Marigold
Unionville District

Sample Number
2563
2565 I
2567
Location
Sample Description
a u ad. _ILnimUlelll --
set: _ SE % 34 30N 34E
-- T A.
4475300
UTM: - 'i 0403675 E
Unknown
set: NW% 34 T: 3 ON R: 34E pp
UTM: 4475050 N 040267L~
Arizonia Mine
Unionville District
Dump~-grab. Prida Limestone & Koipgo
rhyol.Lt e-Fo~~hs~ .SilicLCicati-~.n.
sericitization, quartz veinlets,
~
gossan in lime.
~
Description
Unionville District
aUad: -- Unionvil le 15 '
~ec. 3 T 29N
~.-select-, Prida lirnestmuz&--
34E 1 - ~oipato -- . - - rhyolite - -- - - porphyry. Quartz -- -
,,,: 4474800 >I 0402950
Wheeler Mine
-
I Unionville District I
- with sphalerite, pyrite, jamestonite,
-. -. . -
tetrehedrite.
Quad: Unionville 15 '
12umpsdect. Prida Fm.. Koi~ato
rhyolite porphyry. Quartz veins,
-. -- - - -
- pyrite, scheelite, tetrahedrite,
-- - -
iamestonite.
I
Quad: Unionville 15 '
sec: 34 T: 30N R: 34E
Inskip Mine
Unionville District
Quad Unionville 15'
~ e c 4 T 29N R _ 34E -
L~TM 4474550
Lucky Dog
\J 0401840~
Unionville District
Unionville 15 '
2 3
30N
3 3 E
Sec:
T :
R :
UTM: 4477875
Panther Canyon W, prospect
0395000 I
Durnpxrab . Rhyolite porphyry, -
silicification,
-- - -- -- - pyrite. .-
numD erab. Prida limestone. auartz
bed-vein, pyrite, sphalerite, galena,
tetrahedrite, various oxides.
Dump grab. Prida limes tone,
- --
pyritization, quartz veinlets, pyrite,
scheelite.
Rye Patch District I
Quad: Unionville 15'
Dump select. Rochester rhvolite.
30N R:
silicification. stibnite. quartz.
Sec: 2 4 T:
UTM: 4478075 N 0396600 E
Panther Canyon or Bradley
Quad:
Rye Patch District
Unionville 15'
Dump select. Rochester rhyolite,
Sec:
:
2 4
4478075
T : 30N
N
R: 33E
0396600
silicification. quartz, pyrite,
sphalerite, tourmaline.
Panther Canyon, Bradley
Rye Patch District
Quad: m v i l
1~ 15'
Sec: 2 6 T:
30N R: 33E
UTM. 4477150 N 3395125 E
Rye Patch Agnes
Rve Patch District
Outcrop chip. Prida shales. brecciated,
quartz stringers scheelite? Pb-Sb
oxides?

Sample Number
2572
Location
. Sample Description
UTM: 4470575 N 0403575
Moonlight Mine
Indian District
Quad: Unionville 15 '
~ec: 15 T: 79N R. 34E
UTM. 4470750 N 0403025 E
Bluebird
Indian District
Quad: Qreana 15 '
~ec: -25 & 26 T: 28N R: 32E
UTM- 4456900 N 0385840 E
Willard Grou~
Willard District
Description
Quad Unionville 15'
25,26,35,36
Sec T - 3 ON . R 33E
-- Dump select. Prida shale & -
-
limestone, pyritization, quartz
UTM ____---- 4475975
Rye Patch Mine
0395850 quartz, pyrite, sphalerite,
- - -
galena, tetrahedrite.
Rye Patch District
auad Jnionville 15 '
Sec: _ 35 T: - 30N R. Prida Fm. , pyritization, silicification,
UTM- 4475825 0405375 stibnite, tetrahedrite, sphalerite. --
I
1
Black Warrior
Unionville District
I
QUA^: Unionville 15'
11 29N R:
Sec: 1 : -- 34E
Q?r_mp_-sdst.BcUt.e -
UTM. 4472950 N 0403825 E
Pfluoger Mine
Unionville District
auad: Unionville 15 '
Sec:
15
-- Dump select. Rochester rhyolite,
sericitization, barite. galena.
chalcopyrite, pyrite.
T : 29N R: 34E
hmp_&.ches t er &JLQULP ,
-- sericitization, chryscolla, tenorite,
-
silver haloids.
I UTM N I
I
Ouad:
UTM: N I
Ouad:
I UTM N I
Limerick. Keratophyre .
sericitic, quartz, chalcopyrite,
--
galena, tetrahedrite and oxides.
Dump gra_b. Shale-quartzite.-,
FeOx, quartz veinlets & stringers,
pyrite, fluorite, barite. calcite.

Sample Number
Sample Description
Ouad Oreana
2 6 2 8N
Sec - .- -- a 32E ... --
Unknown -
Willard District
Oreana 15'
19
T
2 8N
ri
3 3E
Ouad. - .
Sec:
UTM 4459430 - h 0387420 E
Johnson-Heizer P
Willard District
Ouad: Lreana 15'
- - -- -
~ec: 30 T: 28N- 8 33E
UTM. 4457490 ri Ql8163nE
Rosa1 Mint
Willard District
Quad Oreana 15'
Sec:
29 2 8N 33E
- T: R
UTM. 4456850 :J 03895_6_0-~
Adriene
Willard District
Quad: Lovelock
36
Set:
UTM: 4455960
15'
T :
2 8N
N
32E
. R:
0386440 E
Outcrop - - . -. - chip. .- Phyllite and sandstone,
si-licification. Quartz stockworks
FeOx aEir pyrite.
Willard Mine ---
Willard District
Ouad: lufhldtn, -15 Dump - - - select.
- vein chip, phyllite and
argillite. Quartz, phyllic SbOx
Sec: 7 T. 2hK-- R: AILstibnite.
UTM: 4444610 - 11 Q~U~LLE
Hollywood Mine
Antelope S~rinns
Quad:
-
Buffalo Mtn. 15'
Dump. - Triassic dolomite conglomerate,
Sec:
9
T.
26N R. 34E calcite veinlets. Cinnabar, Sb-Pb
UTM: 543000 0400200
-. N
Pershing Quicksilver
Antelope Springs
- -
Quad:
Sec:
Buffalo Mtn.
16
15'
25N T: 34E
Dumpsel.e&. - Gabbra, scapcdite,
chlorite, magnitite.
UTM: 4431500
American Ore Mine
Mlneral Basln
N 0401625 - E
Quad. Buffalo Mtn. 15'
Sec:
15 T.
25N ,. 34E
UTM 4432910 N 0 U 1 8 0 ~
Segerstrom-Heizer
Mineral Basin
D~mp Crab ,._
Feox -- - silic. - - Quartz vein --L-- silic
lriassic&yUitis -
- rock
- - - -
D-u.mq._se.lec~. Aesnzoic_ph;.rllite,-quartzite.
Feox, quartz vein stibnite,
pyTTtG-sb -Ox.--
- Vein -- C_h.ip. Phvllite and sandstone.
sericitic. Ouartz. stibnite. SbOx
pyrite, -F_Ox. . -. - - . . -
Mesozoic phyllite and sandstone,
sericitic. Quartz stockwork,
stibnite, SbOx, pyrite.
4ump.,_gahhra,rhlmit.pQUte.-
magnetite, pyrite, apalite.

Sample Number
2589
25!xL-.
I
Locatiorl
a , Lovelock 15'
7 -7--- 32E-
2 6N-
sec - . _ _- - -- I R
Nut tlebury Mine
Muttlebury District
Sample Description
- . - -. - - - -- - - . - -
Ouad Lovelock 5 ___
Sec 33
26N - A 32E
UTM 4437360 'I 0381720
Descr~ption
Dumpb selec_tL~h.al_e,_1_C~esSfonC,qua rf z ,
calcite, pyrite, tetrahedrite,
so-n e-;-- Cu-,-p3-, S ox ,----
. - . .. . . . - - -- . - - - - - - .
Long or Long Lease
- -- I . -- - _ -
Wild Horse I
I--
Set
--
UTM 4433120 3 0383920 E
Unknown - Mine
Wild Horse
Dump, skarn, grani~~hn-
marble. Skarn. hornfels scheelite in
skarn .
Chad Lovelock -15 ' - Dump-oxide - - - - -- are gabbro,
14-15 2 5N 32E pyritization, bleaching. Bindhemite
r -- R - - - - - --
Sec:
- - - - - - - - -
Ouad: Lovelock 15' --
14-15 2 5N 32E
Sec: T : R.
- :J
Unknown
Wild Horse
Lovelock 15'
14-15
2 5~- 3 2E
T: R --
M I 4433120
U T 4432450 >I 0383820-E
Green Mine
Wild Horse
Ouad. Carson Sink 15' .-
Sec: SW % S10 T: 23N 29E
0383920 E . -
UTM: 4414630 w 0353120-i
M.H. Claims
Mopung Hills District
1 Ouad. I
I Ouad
Sec: T: R:
UTM: N E
Ouad:
Sec: T: R :
UTM: - N E
-- silicification,
after jamesonite, pyrite, arsonopyrite.
- - . . --
. Dump-sulfide,bbro. - - . .- - - - - . - --
Silicification,
pyritization, bleaching arsonopyrite?,
TameScini€ e '!
Dum~ select aabbro. Bleaching. araillic
quartz, pyrite, Jamsonite, FeOx,
bindhelmite.
Qumhgrah- s~am-hmnhhnrnfP_1~-
- Skarn, pyrite, chalcopyrite, CuOx,
FeOx.

Sample Number
2593
2594
Sample Description
6
Sec - T 27N 29E
UTM
4455880
Location
ohad Desert Peak 15'
2 0
S*c -- - T 24N A 2 8E
u r !,I 4422650 '1 - 0340700
- - --a
Velvet Mine
Velvet Distri'ct
Jessup District
Quad: -Lowry Well 7 11 7 '
A.
k 0349840
Description
-Rhyali LL- S i ~
veins. Argillic pyrite.
- - -- . --- -
I - - - -- -. -- -
-Ilump. a n d . - ~ e i n - g h ~ w L k
- Silicification, . - . - - . - - - -. ar~illic ilute,
-pyrite, quartz.
I I
2595 ( Quad: ~owry well 7 1/21 -. Dump grab-. Rhyolite. Stlicif ication.
I 4455300
UTM: k 0349700
Prospect
Velvet District
set: SE k 6 T: 27N A: 29E Illitequartz, oxid sulfides.
1 Ouad:
Sec: T: R :
1 I UTY: N E
Ouaa:
Sec: T: R:
UTM: N E
Ouaa:
Sec: T: R:
UTM: N E
Ouad:
Sec: T: R:
UTM: N E
-
I ---

Sample Description
Sample Number Location Description
Hinkey Summit 15' Massive white v~L~qua~t7. V I I P vein ~
Sec 8 T 43N R 39E
UTM
4607500
N Oh49750
Solid Silver Mine
Quad:
New Goldfields District
Sec: T : R:
UTM: N E
contains streaks & c l o t s a c k !
sphalerite, galena, pyrite, clear quartz
in vugs. Vein brecciated, sulfides fill
& cement breccia. ~ossiblv some
-
cerrusite present.
Quad: Spring City 7 112' Massive white vein quartz, brecciated
with blue quartz cement, sulfide
casts pyrite in vugs, possible
arsenopyri te .
Spring City District
Spring City 7 112'
~ec: 22 T. 43N R. 40E
UTM: 4604530 N 0461820 E
Spring City District
Quad: Spring City 7 112'
~ec: 22 T: 43N 40E
UTM: 4604020 N 0461820 E
Silver Butte Mine (Wildgoose Vej
Quad:
Sprinn City District
Sec: T: R :
UTM: N E
Quad: Spring City 7 112'
Sec: 2 2 T: 43N R, 40E
UTM: 4604040 N 0462070 E
Paradise Mine
Spring City District
Quad: Spring City 7 112'
Sec: 2 2 T 43N : 40E
UTM: 4604240 N 0462100
Silver Butte Mine (Paradise Veir
Quad: Spring City 7 112'
Sec: 3 4 1: 43N R: 40E
4600740 N 0461560 E
Spring City District
White vein quartz, some vugs lined
with clear, euhedral quartz crystals,
blue & green CuOx staining, vein
brecciated and cemented with clear, dark
quartz clots & streaks wallrock in vein.
White vein quartz with clots sulfides
silvery-white(arseno~vrite?)sulfide in
sprays and clots, fine-grained pvrite,
I some ruby-silver vein brecciated,
--
cemented with clear silica, pyrite ccats
White vein quartz with clots marcasite,
pyrite, some arsenopyrite.
White vein quartz with clots
arsenopyrite.
Breccia from contact zone. quartzite,
phyllite, rhyolite cemented with
quartz, F.eOx-stained quartz crystals
coat fractures.

Sample Number Location
Sample Description
Quad: O S ~ O O ?Itns. ~ 15 '
set: 17-18 T : 38N R 42E
UTM: 4556850 N 0476750 E
Frenchman Claims
Potosi District
Quad: O S ~ O O >!tns. ~ 15'
Sec: 9 T : 38N R: 4 2E
Description
Garnet skarn, fine-grained subhedral
to anhedral garnet. clots cinn-red
limonite, subhedral quartz.
Garnet, epidote, diopside, quartz skarn,
--
trace scheelite. molvbdenite. chalco-
UTM: 4559750 N 0479150 E
Riley Extension Mine pyrite, pyrite, clots quartz and
Potosi District
Quad: -nod Mtns - 15'
calcite.
Garnet skarn, glassy quartz rich rock,
Sec: 33 T: 38N R: 42E clots molybdenite specks scheelite.
UTM: 4562050 N 0478450 E
Moly-Tonopah Pit
Potosi District
Quad: O S ~ O O Ntns. ~ 15'
~ec: 9 T: 38N R: 42E
UTM: 4559600
Riley Mine
Potosi District
N 0479050 E
Quad: OSP;OO~ FItn. 15 '
~ec: l7 T: 38N R: 4 2E
UTM: 4557650 N 0477300 E
Kirby Mine (upper)
Potosi District
- -
Quad: OSROO~ Mtn. 15'
Sec. 6 T: 38N R: 4 2E
UTM: 4560200 N 0475850 E
Alpine Pit
Potosi District
Quad: Osgood ?[tns. 15'
31 T : 38N R: 42E
Sec.
UTM: 4561800 N 0476100 E
RE Claims Pit
Potosi District
Quad: Osg00d Mtns. 15'
31
T: 38N R: 4 2E
Sec:
UTM: 4561550 N 0475850 E
Richmond Mine
Potosi District
Quad: Dry Hills North 7 1/7'
~ec: 12 T: 39N A: 42E
UTM: 4569420 . N 0483580~
Dry Hills Silver Prospect
Potosi District
Pale. amber garnet skarn.'subhedral
garnet, scheelite specks chalcopyrite,
MoS?.
Garnet skarn, minor CuOx stain, subhedra
subhedral, amber garnet, some diopside,
patches grey-green tremolite, spots
of scheelite.
Coarse-grained garnet skarn, very fine-
grained scheelite, clots & patches
grey-green tremolite, some quartz and
calcite.
Garnet-quartz-tremolite skarn, minor
scheelite.
Garnet-diopside-quartz skarn. clots
pyrite, coarse-grained scheelite.
White vein quartz, hematite staining,
tetrahedrite clots rimmed with green
& blue CuOx staining.

Sample Number Location
Quad:
Sec:
Sample Description
Drv H i l l North 7 1 1 2 ~
2,11
39N 42E
T :
4569740 1, 0483000 E
Dry Hills Tacti te Prospect
Ouad,
Potosi District
Dry Hill North 7 112'
10
39N R. 4 2E
Sec:
T:
UTM: 4568080 N 0481310 E
Dry Hills Manganese Prospect
Potosi District
Quad: Hinkey Summit 15'
8
43N R: 3 8E
Sec:
T:
UTM: 4608300 N 0439825 E
Rainbow /I5 Claim
Quad:
New Goldfields District
Sec: T: R :
UTM: N E
Hinkey Summit 15'
~ec: 8 T: 43N R. 38E
UTM: 4608500 N 0439125 E
Mustard /I1 Claim
New Goldfields District
Quad: Hinkev Summit 15'
Sec: 5 T: 43N . 38E
UTM: 4609075 N 0439325 E
Quad:
New Goldfields District
Hinkey S~mmit 15'
Sec:
UTM:
5
4609225
T: 43N R: 3 8E
0439400
New Goldfields District
Quad: Hinkey Summit 15'
sec: 32 44N R: 38E
UTM; 4610300 N 0440550 E
Ohio Mine
New Goldfields District -
Quad: Hinkey Summit 15'
~ec: 29 T: 44N R: 38E
UTM: 4612875 N 0440200 E
New Goldfields District
Description
- --
Cossan in garnet skarn, Ironmanganese
gossan, coarse grained amber
garnet, minor CuOx stain. quartz,
open spaces filled with oxides, fine-
grained FeOx-rich iasperoid.
MnO-rich jasperoid, pyrolusite, rock
laced with silica veinlets. rock a white
quartz micro-breccia cemented with
pyrolusite, and clear quartz, some vugs
lined with clear quartz crystals.
Milk-whi te quartz vein. inclusions of
phvllite. thick hematite-limonite
pseudomorphs after pyrite, some fresh
pyrite, fine-grained grey sulfides(?),
black platy mineral - could be specular
hematite or wolframite(?) .
White quartz, FeOx staining, brecciated,
cemented with clear quartz, limonite
- -
hematite coatings.
White quartz, minor FeOx stain, vein
brecciated, cemented by later quartz,
clots massive hematite-limonite.
White vein quartz with clots and streaks
write-marcasite, silvery sulfide,
possibly arsenopyrite, vuggy with clear
quartz crystals lining vugs.
Brecciated white vein quartz, spots
CuOx stain. spravs malachite, some
chvrsocolla. some galena, pyrite,
chalcocite, sphalerite, native silver
elobulesin ~atch of malachite.
FeOx & MnO-stained white vein quartz,
gossany clots.

Sample Number
2627
Quad: Pronto 7 112'
Sec:
UTM.
18
4529400
JBJ Claims
Sample Description
Location Description
T : 35N 35E
- N
Central District
Quad: Pronto 7 112'
0407860
Sec. 18 T: 35N R: 35E
UTM: 4528300 N 0407710 E
- --
Vuggy vein quartz, red hematite stain,
MnO points, minor CuOx, clear quartz
--
crystals in vugs, pegmatitic,
feldspar clots with quartz.
Brecciated white auartz vein. red
hematite banding, galena, pyrite,
calcite, some yellow oxides, possibly
lead.
Central District
Quad: Gaskell 7 112' Vitreous white vein quartz. hematite,
3 5
36N R: 34E pyrite.
Sec:
T :
UTM; 4533160 N 0405020 E
Old Bob Claim Group
Central District
Quad: Gaskell 7 112'
Sec: 10 T : 35N R: 34E
UTM; 4530760 N 0402920 E
A & H Claim
Central District
Quad: Gaskell 7 172'
29
Sec:
T :
35N R: 34E
UTM: 4526330 0400030 E
Yellow Jacket Group
Central District
Quad: Gaskell
29
7 112'
Sec:
T : 35N R: 34E
UTM: 4526280 N 0400080 E
Yellow Jacket Group
Central District
Quad: Gaskell 7 1 I7 '
~ec: 29 T: 35N R: 34E
UTM: 4526850 N 0400480 E
King Midas Group
Central District
Gaskell 7 112'
Sec: 2 0 35N : 34E
T 4527130 N 0400900 E
Golden Eagle Mine
Central District
White vein quartz with hematite clots,
some green staining.
Oxidized vein material. yellow-brown
gossan clots in brecciated quartz. dull
red-brown hematite.
White vein quartz. clots of black &
silver grey sulfides (arsenopvrite?)
hematite staining, clots of chlorite.
White vein quartz with clots hematite,
chlorite, arsenopyrite.
Vein quartz, clots green staining, some
arsenopyrite, some pale grey-green
crystals, possibly diopside, coatings
of jarosite, green As minerals.
Quad:
Crushed. recemt~d whi re vein
FeOx, pale green crystalline mineral
~ec: 25 T : 35N : 34E
coating fracture, probably arsenic
UTM: 4526320 N L~%Q~~LE
mineral.
Central District

Sample Number Location
Sample Description
Ouad: Pronto 7 112'
2 5
T: 35N R: 34E
Sec:
UTM: 4525650 N 0406330 E
Silver Crescent Mine
Central District
Ouad: -0ve 7 112 '
35N ,: 34E
sec: 36 T :
UTM: 4524940 N 0407080 E
Central District
Ouad: Cos~rove 7 112'
Sec: 3 5 T : 35N R: 34E
UTM: 4523490 0405410 E
Wheelborrow Mine
Central District
Quad: Woody Canyon 7 112'
Sec: 3 T: 35N R: 34E
: 4523580 0403730
Blackbird Mine
Central District
ouad: Woody Canyon 7 112'
Sec: 3 T: 34N R: 34E
UTM: 4522560 N 0403310 i
Republican Mine
Central District
Ouad: -i t t 15 '
Sec: 3 T: 46N R: 39E
UTM: 4630400 N 0451150 E
Birthday Mine
National District
Quad: McDermitt 15 '
Sec: 28 T :
46N R: 39E
UTM: 4631410 N 0451425 E
Blum Shaft
National District
Quad: McDermitt 15'
Sec: 2 7 T :
46N R: 39E
UTM: 4631500 N 0452450 E
National Mine
National District
Ouad: OSPOO~ Mtrl. 15 '
Sec: 3 2 T:
38N R: 4 2E
T : 4553400 N ,0477275 E
Pinson Mine
Description
Brecciated auartz vein. cemented
by red-brown and brown hematite,
yellow-green stain, MnO points.
FeOx-stained,~~~ quartz vein,
2"-3" thick, clear vitreous quartz
with clots limonite gossan, MnO
stain, jarosite crystals coat surface
of vugs.
Brecciated, milky quartz vein, vuggy,
FeOx stain, some sphalerite, galena,
some clear vitreous quartz.
FeOx-stained hornfels and granodiorite,
thin white quartz veinlets, no obvious
mineral.
FeOx-stained, kaolinized granodiorite,
minor vein quartz, hematite clots.
Vuggy, clear quartz, flecks blue-black
sulfide along margins of vein, galena,
stibnite.
Quartz-sulfide breccia. vuggy quartz
cemented clear quartz, marcasite,
pyrite clots & cubes in quartz, some
sphalerite .
Cockscomb quartz vein. banded. Y"'
thick band of stibnite, specks galena,
pyrite. sphalerite, marcasite.
ll~#l
limonitic gossan, quartz in meta-
limestone, quartzite.

Sample Number
2645
2646
2647
2648
2649
2650
2652
2653
Location
Ouad: Unionville 15 '
Sec: 16 T :
Sample Description
28N R: 34E
UTM: 4459650 I 0401900 E
West Vein
Ouad:
Rochester District
Desert Peak 15'
Sec:
UTM:
6 T: 22N ,:28E
4407600
N
Fallon Eagle Mine
0338440
Desert District
Desert Peak 15'
6 22N ,.28E
Sec: T:
,TM: 4407550 N 0338540 E
Fallon Eagle Mine (southeast)
Desert District
Sec:
Desert Peak 15'
6 T: 22N R. 2 8E
,: 4407350 0338250
Unnamed prospect
Desert District
auad: Desert Peak 15'
Sec: 1 T: 22N ,:27E
4407000 0337955 E
Old English Mine
Desert District
Ouad: Desert Peak 15'
Sec: 1 T:
22N ,: 27E
UTM: 4406955 0338130
Pesert Queen Mine
Desert Peak 15'
Sec: 7 T: 22N R: 28E
UTM: 4406600
Badger Patent
Desert District
N L~XBN!LE
ouad: Toulon 15 '
2 9
25N R: 29E
Sec:
4429170 0351400
UTM: Microwave Adi t
Toy District
ouad: Toulon 15 '
2 2
Sec:
T:
T:
25N R: 29E
UTM: 4430650 N 0354650 E
Coon Can Mine
Toy District
Description
Dump sample.
Quartz vein with pyrite, tetrahedrite.
Dump sample. hematite U stained,
brecciated vein quartz, specular
hematite, white calcite.
Outcrop, hematite and MnO stained,
brecciated quartz vein, some pyrite
in silicified dioritewallrockalong
vein.
Dump sample, SE extension of Fallon
Eagle structure, shattered, clear
vein quartz cemented by glassey
mixture of FeOx & MnO.
Dump sample, brecciated vein quartz,
FeOx stained, some CuOx coatings.
Dump sample. brecciated. vitreous white
and clear quartz, clots chalcopyrite
oxidizing to melaconi te, malachite,
blebs dark sulfide in glossv quartz.
Dump sample. kaolinized dlorlte, . .
chlorite, CuOx clots and fracture
coatings, malachite.
Outcrop, one-foot thick band of
diopside - garnet skarn, points of Mn
0 Y Feox.
Pale brownish garnet, quartz. d i o w ,
Feox paints, blue-white fluorescing
scheelite.
-

-
aJ c
U .r(
-d aJ
L >
aJ Y
-4-4 M
r d n e
s a d 0
arn
V)V) rd
0
rn al aJ
U U
0 - .d
-la u
U U .d
-d L
aJ
"U "I
-4 a
3 - a f
N r d U
u e .rc
LaJ L
rdcl a
3 r d aJ
CTM C
cd v)

Sample Description
I I
Sample Number 1 Location I Description
2663 Quad: Oreana 15'
Pegmatite composed of orthoclase,
~ec: 3 T: 29N ,: 33E
UTM: 4472750 N 0394900 E
Oreana Tungsten Mine
Rye Patch District
Quad: Osgood Mountains 15'
Sec: 3 3 T: 39N R: 4 2E
UTM: 4561600 N 0478800 E
Getchell Mine, south pit
Quad:
Potssi District
Sec: T: R.
- -
UTM: N E
Quad:
Sec: T: R :
UTM: N E
Quad:
- - - - - - -
Sec: T: R:
UTM: N E
Quad:
Sec: T: R :
UTM: N E
Quad:
Sec: T: R:
UTM: N E
Quad:
- - -
Sec: T: R :
UTM: N E
Quad:
Sec : T: R :
UTM: N E
quartz. beryl, some coarse-grained
scheelite.
Carbonaceous gold ore. realaar, -
orpiment, pyrite, quartz.

Sample Number
2h70
2672
Location
Sample Description
Dun Glen Peak 7 1/2'
-
Sec:
UTM-
5
4512190
T 3 3N R 36E
0420070
- E
Tallulah Mine
Sierra District
Quad Dun Clen 15 1 _
~ec 8 T 33N R 36E
UTM 4511200 H .- 0419600 E
Sierra District
Quad: Dun Glen 15' --
~ec: 8 T: 33N R. 3 L -
UTM: 4511000 0419750~
Sierra District
Dumb sample, white vein qgartz;. clots
.. . ~
tetrahedri te, sphaleri te, galena,
. - ~ ~ .
Description
- . .. . -- .- .-
euhedral pyrite cubes ur, to 112" on
a side, galena-sphalerite form on
- . -- .-
pyrite cubes.
Dumpsamp L editP-tz-pnslP
green, boytroidal mineral in vugs(Xs?),
' - (Sb oxides?).
- -. - - - ----- -
I
clots sphalerite,bladed white crystals,
-
Dum-p sample, vecn quartz, spots of
tetrahedri te, Cuox staining.
-. - -
Quad: Dun Glen 15' -
Set :
26
lllmp.sample, vein quartz. milkv-whitx,
,,,, 4505850
T : 3 3N
?J
36E
3: --- clots of limonite after pyrite in
0424300 quartz. free ~old in cellular limonite
Twin Dome Mine
Sierra District
in some clots.
Quad: Dun Glen 15'
Dump sample, white vein quartz, -
sec: 30
UTM: 4506350
Mincon Mine
T: 33N P: . 3 7 E -- limoni te-after-pyri te casts , limonite
fracture coatings.
N 4k2_7_620__~
Sierra District
Rose Creek 7 112'
UTM: 4532000 PJ 0425080~
W.P.(Table Top) Mine
Ten Mile District
Quad: Dun Clen 15'
Sec:
UTM:
5 T: 31N
4492850
N
Yellowstone Mine
3 7E
R
0429100
--
Sierra District
Dumpsample.-
White vein quartz with Feox-filled
--
cavities, some open vugs lined with
- clear - - quartz crystals, fine-grained
- .- -. -
dark mineral, black calcite.
Dump sample --
Banded, chalcedonic quartz vein,
- -
pulverent yellow Feox in vugs, as
-. - - .
boytroidal coatings on dark bands,
crystals of ruby silver disseminated
Quad: I insnmrpartroLxein.
Sec: T: R :
UTM: N E
Quad: Mt. Tobin 15'
28
4458250
--
2 8N
T:
N
39E
R. --
0449600 -
Sec:
I UTM
- Dump SampJe
Brick-red gossan from fracutre zone.
calcite and quartz veining. finr-
grained cinnabar in hematite.

Sample Number
26 7 3
Quad
Set: _
Mt. Tobin 15'
Location
Sample Description
28 2 8N 39E
-- T. n.
4457300
Tip Top Mine
Tobin District
-
UTW - Y ~ ~ ~ ~ - E
32
Sec: - T: 28N , 39E
UTM: 4456850 0447700 F -- N A _ . .
Quad:
Eureka Mine
Tobin District
UTM: N E
Quad. Buffalo Mt. lx'
Sec:
32
T:
-
-
2 7N 34E
R. -
u~m: 4446600 0399400 E
Nevada Mine
Antelope Springs District
Quad: Buffalo Mt. 15'
sec: 16 T: 2 L
UTM: 4442600
Montgomery Mine
u 0400800
Antelope Springs District
au2d: Lovelock 15'
A. 34E-
~ec: l5 -- T: 27N R- 33E
VIM: 4451900 rr 03992750
Sutherland Mine
Black Knob District
Quad: Lovelock 15_'
sec: 36 T: 28N R- 32E
UTM: 4456100 N -0386500 E
Willard Mine
Willard District
Quad:
Sec: T : R
UTM: N E
Quad:
Sec: T : R.
UTM: N E
Dum~samele~-
Description
Red -- to Red-brown --- jasper -- gossan, laced
-L_.
with silica - veinlets; brecciated and
cemented - with silica.
- Select - -- - -- chip -
__
Silicified fault breccia, cemented
with silica, red-brown and cinn-brown
limonite filling in cavities & coat&g
-- -
fracture surfaces, trace fine-grained
cinnah-
Dump sample, silicified dolomite and
- - -. - - - - . --
dolomite breccia; blebs, streaks of
bright red, crystalline cinnabar
-
in breccia and in calcite veins
cutting breccia.
-
Dumpsample, clots of crystalline
cinnabar, some yellow Hg or Sb
chlorite mineral (?) in silicified
dolomite breccia, calcite veining.
Rumm.mp k,maassive ~~
stibnite with c&cite and quartz.
yellow and white antimony oxides.
--
Dump sample, silicified breccia,
--- jasperoid, vuggy, clear quartz crystals
and red hematite in vugs, clots
sericitized and kaolinized shale in
-.
breccia in quartz cement. some FInO
stain.

Sample Number
Location
auaa: L_ovelock 15' -
Sample Description
~ec: S_W14,35 T _?IN- R 3.X
TM 4446030
u . N 0384000 -E
Unknown
Muttlebury District
Quad: Lovelock 15 '
Sec: 5~14, 34
r: 2 7N 32E
R --
UTM: 4446190 N 0383370 E
Crystal Placer
Mut tlebury District
Quad: Barre t t Springs 7 1/ 2 '
UTM: 4543400 N O-E
Hi Hopes
Winnemucca District
Quad: Sulphur 7 112 '
1 ~ec: Unsur. 35 T: 35N R- 29E
UTM: 4525100 N 0357500 E
East China Pit
( Sulphur District
1 Quad: Sulphur 7 1/2L----..
Unsur. 35 3 5N 17. 29E -
1 Sec.
I UTM:
4525100 0357500 -E
East China Pit
I Sulphur District
I
Quad: Sulphur 7 112 '
Sec: Unsurv. 35 T : 35N ,: 29E
4525100
UTM: - N 0357500 E
East China Pit
1 Sulphur District
Quaa. Sulphur 7 112' -
Sec.
T:
Unsurv. 35 35N ,: 29E
- T:
UTM: 4525500 N 0357500 E
Mercury Pit
Sulphur District
Quad: ' -
set: Unsurv. 35 T: 35N R 29E
UTM: 4525500 0357500 E
Mercury Pit
Sulphur District
Quad: Sulphur 7 112'
Set: Unsurv. 35 T: 35N R: 29E
I Mercury Pit
Sulphur District
Description
Gypsum. Gypsum with moderate amount
calcite, . --. - minor - . montmorillonite
-- - . -- . .-. and
traces of mica and quartz.
Gypsum.
Montrno.ril-limi tp w i t l ~lLn-op ~ tiloli te,
cristobalite, quartz, feldspars, and
calcite.
Most intensly altered con_glomerate.
--
Consists of quartz and anhydrite.
Moderately altered rock conglomerate.
- --
Consists of quartz and sulfur.
-- -
Sulfur present.
Altered rock adiacent ot sulfu body.
Consist of quartz and cristobalite.
Leas t&etrrddrock.; - rmtainssulfur,
Conglomerate. Conists of silica and
sulfur.
Iron-oxides rock tuff-breccia. Consists
of silica, koalin, and sulfur.
Strongly altered rock. Consist of
silica with minor anhydrite &
pyrophyllite(?)

Sample Number
2710
Location
auad. Sulph~f 7 112'
Unsurv. 25 3 5N
Sec: T- - -
UTM. 4525800 --
Peterson Pit
Sulphur District
Sample Description
R 29E
Quad: Sulphur 7 112'
Unsurv. 25 T,
Sec: 35N R: 29E
UTM: 4525800 N 0359350 E
Peterson Pit
Sulphur District
Quad: Sulphur 7 112'
Unsurv. 25 , 35N , 29E
UTM: 4525800 N 0359350 E
Peterson Pit
Sulphur District
auzd: Disaster Peak 15'
S,c, Unsurv. 24 T. 45N R: 34E
--
"T,: 4623700 N 0408400 E
Ed Claims
Opalite District
Quad: Unionville 15 '
Sec: 19 T: 28N R: 35E
UTM: 4458900
Pinite Mine
N 0407250 E
Spring Valley District
Quad: Unionville 15 '
19
28N R: 35E
Sec:
T :
u.~M: 4458900 N 0407250 E
Pinite Mine
Spring Valley District
Quad: Lovelock 15'
2 7
Sec:
T : 27N
- -
R: 32E
UTM: 4448300
Lovelock Gypsum
~uttlebur~ District
0382250
4448300 N 0382250 E
Lovelock Gypsum
Muttlebury District
Ouad, Lovelock
Sec:
15'
22
T: 27N ,: 32E --
UTM: 4449700 N 0382400
North Lovelock Gypsum
Muttlebury District
E
Description
Altered rock with sultur.
Opalized rock.
Altered and breccia rock.
Altered rock on west side of pinite
body. Serlcite and koalinite.
Mixture of sericite and pyrophyllite.
Impure gypsum.
Rare evDsum.

Sample Number
2719
L/ZO
2721
I uTM
Location
Sample Description
ouad: Buffalo Mtn. 15'
Gypsum.
-- .-.
car. 2 7 ., 25N , 35E
0412100
E
Corn 4429000 Beef Gypsum . .
I -
I Table Mountain District I ---
ouad: Buffalo Mtn. 15'
NE/~, 11
Set:
T: 25N R. 35E
UT,: 4434250 0414200 E
Stoker Kaolin
Table Mtn. District
auad: Fencemaker 15 '
SE/4, 1
Sec: -
25N
T :
a: 35E
UTM: 4434600 0415600
N -
Nevada Fluorspar
I Table Mtn. District 1
I I
Kaolin.
Descript~on
2722 1 cdad: Fencemaker 15' ! &~&hre.- rnar~rf~l ov~rl~irg -
2723
I Nevada Fluorspar I -
Ouad:
Table Mtn. District
set: 17 & 18 T: 26N 37E
UT,: 4440700 N 0427000 E
Susie Fluorspar
.-
Fluorite and abundant quartz and minor
mica.
Fluarite-rock material.
2724
1 I
1
Table Htn. District
Ouad: Fencemaker 15'
1
I
I
) Gossan (after -- sulfides?) with some
Set: 17 & 18 T. 26N R: 3 7E fluorite.
2725
2726
2727
UTM: 4440700 N 0427000
Susie Fluorspar
Table Mtn. District
Lovelock 15'
UTM 4454250 N 0385400~
Section 2 Montmorillianite
Willard
Poker Brown Spring 7 112'
19 T. 28N ., 31E
F"".
Arabia District
I SSC: 25 T: 28N ,: 28E I
Montmorillonite.
Perlite .
Quad: Seven Troughs SE 7 1/ 7 ' Diatomite.
"TM: 4458800 N 0347800
Tunnel Hill Diatomite
Velvet District
1

Sample Number
-
Sec:
Location
Trinity Pass 7 112'
2 1
28N R: 2 9E
T.
Sample Description
UTM: 4460700 N 0353000 E
Horseshoe Basin Diatomite
Velvet District I
1 Ouad: I
Sec: T: R:
UTM: N I
Ouad
Sec T R
UTM N E
Diatomite.
Description
I Ouad: 1
rTr1
UTM:
Ouad:
Sec:
UTM:
Ouad:
UTM:
Ouad:
Sec: T: R :
UTM: N E
I I
Ouad:
Sec: T: R:
UTM: N E

Sample Number Location
I
2801 I Quad: Sulphur 7%'
I
Sample Description
UTM: 4515180 N 0362890 E
Blakenberg Dydcan
Scossa
Quad: Sawtooth Knob 7 $'
Sec: W % 30 T: 34N R: 31E
UTM: 4515560 N 0370200 E
Jim B Claims
Scossa
Ouad: Srossa 7%'
set: SE% 10 T; 33N R: 30E
UTM: 4510260 N 0365970 E
Daves Gold Mine Inc.
Scossa
Description
Quartz veins. Iron-stained vu-
possible Au, Ag.
Massive white quartz VUEEV iron -
stained possible precious metal.
Quartz vein, partly brecciated,
shattered iron-stained.
Quad: Scossa 7%' . .
8
matrix shattered with iron-staining.
Sec:
Unnamed Shaft
Scossa
T: 33N R; 30E I Phy''irp hrPri-
I Quad: Scossa 7%' :n
31E Some calcite, sidorite sulfides.
Sec:
SE 18
T: 33N R.
UTM: 4508950
Gold Ribbon Rock
N 0371050 E
Antelope
Quad; Scossa 7%'
set: S% 24 T: R :
4506900
0368900
UTM:
Quad: Scossa 7%'
Sec: 26 T: 33N R: 30E
UTM: 4505680 N 0368890 - E
Antelope
Quad: Scossa 7%'
26
Sec :
N
T: 33N R: 30E
UTM: 4505625 N 0368000 E
Nevada Superior
Antelope
Quad: Rocky Canyon 7%'
NE% 4
31N ,: 29E
Sec:
Unnamed Prosoert
Seven Troughs District
T:
-
Ouartz vein material. Iron-stained.
ver
chalcopyrite, garnet, epidote limonite.
Replacement ore with minor quartz,
galena, silver copper oxides.
Volcanics breccia, with minor
fe-oxides.

Sample Number
2812
Location
Quad Rocky Canyon 7 112'
-
Sample Description
~ e c 17 - T 31N R 29E
UTM 4490450 N 0352085 E
Wildcat Mine
Seven Troughs (~arrel1)-
Quad Rocky Canyon 7 112'
17
Sec
T 31N , 29E
UTM. 4490180 N 0352165~
Wildcat Mine
Seven Troughs (Farrell)
Quad: Rocky Canyon 7 W
UTM: 4490000 N 0352320 E
Wildcat Mine
Seven Troughs (Farrell)
Quad. JuniDer Canyon 7 117'
Sec: 19 T: 31N R: 2gE -
UTM: 4488800 0350300 E
Unknown
Seven Troughs (Farrell Dist.)
Quad: Juni~er Canyon 7 1/7'
Sec: 2 5 : 31N ,, 28E
UTM: 4486770 i 0349200 E
Unnamed Adit
Seven Troughs (Farrell) Dist.
Quad. Rocky Canyon 7 112'
Sec: 5 114 29 T. 31.N ,, 29E
UTM: 4486530 N 0352520 E
Seven Troughs (Farrell) Dist.
Quad: Seven Troughs 7 112'
~ec. 13 T: -L R. 28E
UTM: 4480190
Tyler Shaft
N 034868~
Quad:
Seven Troughs Dist.
Seven Troughs
13
30N ,. 28E
Sec:
T :
UTM: 4481090 N 0348620 E
Mazuma Hills Mine
Sec:
Seven Troughs Dist.
Seven Troughs 7 112'
NW 1/4 19 T: 303 R. 29E
4480330
UTM - N 0349890 E
Unknown
Seven Troughs Dist.
Description
Quartz breccia, vuggv quartz with Feoxides
and grav sulfides. - Very
a1 tered.
- - -- - -
au_ar-Lz breccia. chalcedony_alunite.
pyrite, Fe-oxides. Gray wispy
streaks of sulfide. -
--
- . .
Promcluarr-
strong silication near contact with
rhyolite.
--
Narrow vein in rhyolite flow. Strox
--
alteration and bleaching, sulfides in
matrix. -
Large quartz vein in ~ranodiorite.
massive with alunite, Fe-oxide, pyrite.
-. Green metasediments slate,-argUit.e+
ay~iteandthh~r slllfjdPs. Near
andesite dike. --
Selected from dump. Rhyolite breccia,
--
with dark-~rav metallic matrix of
gray-sul fides .
--
Vein material near contact with
rhyolite and andesite. Some
brecciation, silication pyrite and
possible Au.
Selected from dumps, calcite PbCo3.
-
&ggy brecciated rhyolite and quartz
breccia.

Sample Number
2824
2827
Location
cuad: Seven Troughs 7 112'
Sample Description
Sec: -NW 1/4 25 - T. -- 30N R: 28E
UTM: 4478610
0347880
H
Fairview Mine
Seven ~roughs(Farrel1 Dist.)
Quad: Seven Trouphs 7 117'
Sec: 24
T: 30N , 28E
UTM: 4479510 Y 0348120 E
Quad:
Unnamed Shaft
Seven Troughs Dist.
Seven Troughs 7 112'
Sec:
36
T: 30N 2 8 E
UTM: 4476900
Portland Mine
0348200 E
Cescription
Highly altered rhyolite vuggy,
.- .- -
brecciated minor ca1cite~~yi~~t.e.
... - .
Possible silver sulfides.
- -. - -- -
Highly bleached and altered hpP of
chalcedonic, rhyolite with pyrite,
silver sulfides.
Volcanic breccia, 10 w quartz fe-
oxides-pyrite, fault gouge.
Seven Troughs Dist.
Quad: Seven Troughs 7 112 '
Chipped from contact zone garnet,
I--
Sec: NW 114 2 2 9N R: -- tactite, silica ti or^, minor tungsten. -
UTM: 4475750 N 0346420 28E E ---
Unnamed Incline I - -
Seven Troughs Dis t .
Quad: Seven Troughs 7 1/2'
Sec: SW 1/4 2 29N R: 2 8E
UTM: 4474650
Unnamed Adi t -
N 0346080 E
Seven Troughs Dist.
Quad: Seven Troughs 7 112'
29N ,: 28E
Sec: 9 T.
UTM. 4473200 N 0343380 E
Sugar Loaf Holiday Group
Seven Troughs Dis t .
Quad: Natchez Springs 7 112'
~ec: 3 T 29N R: 30E
UTM: 4475100 0364980
E
Trinity District
auad: Natchez Spring 7 112'
UTM: 4464680
Unnamed Shaft
Trinity Dist .
N 0364900 E
aUad. Natchez Spring 7 112'
Sec: NE 112 17 T: 29N R:
UTM: 4470950
Esther Mine
N 0371550 E
Trinity Dist.
Me~asedim.nt;s and quartz vein. garnet,
tactite, tungsten, Cu-oxides and
-
From a dump in front of adit contact
metasediments, tungsten with quartz
vein material and minor sulfides.
--
From a vein in an adit and outcrop in _
- the stream channel. A highly oxidized
and brecciated quartz vein, with
sulfides.
From a dump next to a collapsed shaft..
a highly altered and oxidized vein..
with Fe-oxides.
31E 1
Selected from a dump and exposed vein..
quartz vein with copper oxides,
garnetiferous, lamped tungsten, moly
and minor sulfides.

Sample Number
Sample Description
2828 ( Quad: 0reana 15' 1 Selected from a dump and exposed vein
-. - - -- . -
~ec: 33 T -- 29N R, 31E including some of the host granite..
- - . - . - -. - - -- - -- - -. . - - - .-
2830
2831
2832
2833
UTM. 4464800 N 0373200 E
Steiner Mine
Trinity Dist .
Set:
Location
UTM: 4464600
Evening Star Mine
Trini tv Dis t .
0377000
Ouad: Oreana 15'
Set: 3 T : 28N R: 31E
1
- - - - -~
UTM: 4464200 N 0373750 E
Mazuma Mine
Trinity Dist.
Quad: Oreana 15'
Sec: NE 114 20 29N ,: 32E
UTM: 4469700
West Group
Arabia
N 0382200 --
Oreana 15'
s e N 112 21 1: 29N s. 32E
UTM: 4469100
Jersey Mine
Arabia
N 0382900 c
Quad: Oreana 15'
Sec: S 112 21 : 29N ,: 37E
I
Descr~ption
Fe-oxides and unidentified sulfides.
Selected from dump and incline
chalcop~rite. Bornite, galena. and
possible silver sulfides.
-
Selected from dump and adit, a
brecciated quartz vein with Fe-oxides
and wispy sulfides of lead and
possible silver.
Chipped from a quartz vein in ProsPeCts
and adits ... Fe-oxides highly altered
and brecciated with yellow-green lead
-
oxides and Cu.
Euzm_expos~d veinsinopen-stap~s
oxidized vein with fe-oxides and -
vellow and green lead minerals.
-- Selected from dumps and exposed vein
(outcrop). The vein is gossan like
UTM: -7nn
I
Monte zuma
Arabia
N 0382600 E highly oxidized, Fe-stained possible
leadlsilver minerals.
2834 Oreana
SW 1/4
15'
9 1, 30N ,. 32E
Quartz veins in metasediments
brecciated, Fe-stained with greenish
Sec:
UTM: 4479000 N 0381800 E I yellow oxides.
Quad:
Arabia
Poker Brown 7 1/2'
~ec: E1/219 31N R. 32E
UTM: 4488170
Poker Brown
San Jacinto
N n 1 7 9 8 n n E
Quad:
Sec:
Poker Brown
19
7 112'
T. 31N , 32E
UTM: 4487610
Poker Brown
San Jacinto
N 0379210 E
Selected from dumps and exposed veins,
galena, silver (?) arsenopyrite.. some
brecciation and carbonate minerals.
Selected from dumps and-4
vuggy, brecciated quartz with galena
and possible' silver.

Sample Number
Location
Sample Description
2837 1 Quad. Poker Brown 7 112'
Sec: 36 T: 31N ,: 31E I
UTM 4484610
Bo ttomely 0378040 I
I
Quad: Poker Brown 7 112'
~ec: 6 T: 3011 B 32EL_
UTM: 4483990 N n17911111LE
Prospect
Arabia
Ouad. Poker Brown 7 112'
sec: 31 T, 31N R 32E
ouad: Poker Brown 7 112'
Sec: SE 114 6 T: 31N ,: 3 2E
UTM: 4492800
Unnamed Prospect
Antelope
N 0379900 E
Quad: Poker Brown 7 112'
Sec: SE 114 5 T: 31N R. 3 2E
4492910 N 0381090 E
I Unnamed Prospect
Antelope
I
Quad: -urn. 7 117'
~ec: 1 T: 32N R: 31E
Description
From exposed veins in open D~OSE-.
narrow quartz vein..iron-stained with
~ --
possible antimony.
- . - - -- --
Sample s-ekcted from 17" quar tzxein_
in an open prospect ... with copper,
- -
antimony, pyrite and possible silver.
-- Narrow vein prospected in metasediments .
with pyrite and possilbe precious
-
%_tals-
UTM. 4484210
Unnamed Shaft
Poker Brown
N 0379200 E
Quad: Poker Brown 7 112'
Selected from a dump near a shaft on - a
~ec: NW 114 29 T: 31N R. 32E gossan-like dump. Quartz and shaley/
UTM: 4486845 N 0380450 E limestone with possible gold/silver
Unnamed Prospect
Arabia
minerals.
UTM: 4507360 N 0377610 E
Last Chance, Strode Mine(Maiuba M
Antelope
Quad: Majuba Mtn. 7 112'
~ec: 2 T: 32N R: 31E
4502920 N 0375810
UTM:
Majuba ~ ili ~ i n e
Antelope .
2845 Ouad: Majuba Mtn. 7 112'
Sec : N 112
UTM: 4501570
Last C-i
Antelope
T: 32N
N
R: 31E
0376110
I -
Chipped _from a vein in a prospect
- brecciakd quartz vein material strong
iron-staining..sulfides possible gold.
. .
Selected from dump. .q- In
granodiorite..sulfides and oxides and
possible gold.
Replacement ore with lessor quartz
vuggy, iron-stained with visable
cerrusite, galena, copper and
.) probable silver mineralization.
Selected from the uDver dumps
rhyolite breccia with minor quartz,
galena, copper sulfides and oxides
probable silver and tin.
Selected fmm,Amp in fr~.*_of caved
and flooded adit..breccia and replacment
ore with sulfides.

Sample Number
2846
Lccation
Sample Description
Quad: Majuba Htn. 7 112' --
SE 114 3
Sec: T 32N R 31E
UTM. 4502650 N - 0375100 E
Western Mines
Antelope
Quad: Long Canyon 7 112'
~ec. I9 _ r, 34N R 32E
UTM: 4517300 N 0379770 E
Unnamed Shaft -
Haystack
auad: Long Canyon 7 112' -
See: NW 114 20 T: 34N R; 32E
UTM: 4517350 N 0381590~
Haystack Mine
Hays tack
Quad Alpha Mtn. 7 112'
~ e c 11 T 34N R .32E
UTM. 4520100 N 0387260 E
Jancke Claims
Hays tack
Quad: Alpha Mtn. 7 1/7'
Sec: 1.1 T: 7LN R: 77E .
UTM: 4520100 N 0387760 E
Jancke Claims
Hays tack
Ouad: 7 113'
Sec: 16 T : 34N R. 31E
UTM: 4519280
Thomsen Mine
Hays tack
0374000 E
Quad: Long Canyon 7 117'
set: SElI4 3 T: 34N ~:31E
UTM: 4521550 N 0375730 E
Unnamed Shaft
Haystack Dist.
Ouad: Rye Patch Res. N. 7 1/21
set W 112 27 T: 33N R: 33E
UTM: 4505300 N 0394280 E
56 Copper Mine
Mill City District
Quad: Twin Butts Well 7 112'
UTM; 4473490 N 0329190 E
Black Mountains Claims
Blue Wing Mining Dist.
Description
Selected from dumps and prosAects
-
strongly altered.-bleached and
silicified, Pb. An and couDer
sulfides.
Quartz vein material and contact
material including couDer, &(. 7 )
tungsten. - .-
Quartz veins and veinlets in
metasediments and granodiorite.
Fe-oxides, chalcopyrite, pyrite,
galena, and possible Au, AR.
Selected from dumps and cut from
vein in adit.. quartz vein has --
arsenopyrite as part of gouge --smeared
along the footwall.
Parallel vein withiuxmmparsena~yri t~
-- alo-g a footwall, along with possible
silver minerals.
A highly oxidized quartz vein freshly
--
exposed in a dozer-cut quartz is
vuggv with limonite filling oven
spaces, maybe Au.
Selected from dump and exposed veln
outside of inlcine.. Quartz breccia.
iron-s tained, Au.
Selected from open-pit, copper oxides
and sulfides including; chalcocite,
chalcopyrite, bornite with possible
silver.
I l h i e m m 3- . in
metasediments with possibletungsten
that did not lamp well in lab.
-

Sample Number Location
Sample Description
Quad Twin Butts Wells 7 1/2'
Sec 1 7 29N 9 26E
UTM - 4473940
O32910OE
-- Black Mountain Claims
Blue Wing Mining Area
_Twin Butts Wells 7 112' --
UTM: k473980 N 4 3 2 8 a ~
Spinger
Blue Wing Mine Area
Quad: Twin Butts Wells 7 112'
~ec: 1 TI 30N R: 26E
UTM: 4484680 N 03729650 E
Twin Butts Mine
S taggs
Quad: Sage Hen Springs 7 112'
s c We 114 13 25N R: 24E
--
UTM: 4434360 N 0309910 E
Red Hammer Claims
Niehtineale
Quad: Sage Hen Springs 7 112'
-Alpineldine
4
Ouad: Sage Hen Springs 7 1/2'
Sec: SE 114 1 3 Ti 25N ,: 24E
UTM: 4433675
Unknown Name
Nightingale
03O882OpE
Quad: Sage Hen Springs 7 112'
e c E 112 25 25N A: 24E
UTM: 4430930
Nightingale
Nightingale
0369950
Sage Hen Springs 7 112'
Set: Se 114 25 T: 25N R; 24E
UTM: 4430220 N 0310100 E
High-grade
Nightingale
Blue Wing Springs 7 112'
Set: NW 114 25 T: 25N R; 25E
UTM: 4431150
Star Mine
Juniper Range
N 0318800~
Vein material from placer gravel
quartz vein and quartz breccia with
-- gray sulfides - in matrix.
Selected from prospect in metasediments
with possible tungsten that did not lamp
-- well in lab.
Replacement-and quartz vein material
--
from leach heap and dump..pyrite,
-
galena, arseno-pyrite and possible
Au, Ag.
---
From contact zone in open pit tactite,
garnet, epidote, tungsten, ilsemannite,
calcite, moly, and minor copper and
---
molybdenum.
From western open pit contact zone
garnet, calcite, quartz, tungsten
minor copper and molybdenum.
Sample from open-stope and dumps.
Leadlsilver mineralization with minor
tungsten, both contact and vein
minerals.
- --
Sample from open stopes and dumps
dark brown and green tactite that
lamped well for scheelite and powellite.
Minormineralization r ow
contact zone ... includes tactite
tungsten. cpvper.
Chipped from a contact zone in a small
pit on thuestside of the district.
calcite, quartz garnet and low grade
tungsten.

Sample Number
2864
Location
auad: Blue Wing Springs 7 112'
Sample Description
set: NE 114 25 T 25N R: -- 25E
UTM. 4431000 - N 0319270 E
Star Mine
Juniper Springs
Quad: Blue Wing Springs 7 112'
~ec: 21 T, 25N A: 26E
UTM: 4431230 0323610 E
Blue Wing
Quad.
Juniper Ranae
Sec: T : R :
UTM: N E
Quad:
Sec: T : R :
UTM: - N E
Quac:
Sec: T : R :
UiM: N E
Quad:
Sec: T : R:
UTM : N E
Quad:
Sec: T : A:
UTM: N E
Quad:
Sec: T: R:
UTM: N E
Quad:
Sec. T : R:
UTM: N E
Description
From a narrow trench exposing a copper
stained vein which also contains
silver/gold -- and uranium, bornite, - - - --chalcite
and chalcopyrite.
From a skarn zone and quartz veins
Garnet, epidote tungsten, and
brecciated quartz with sulfides.

Sample Number Location
Quad 3-aes tAaL
Sample Description
1 - 1 5 -
Sec. . 18
r -24N p 28EE
UTM l c G 2 2 0 7 5 $1 Q~LLO~ZL-E
of--_ --
E a s t e r ~ p a r t i o n
Jessup Mining District
auad Desertak 15---
I
sec 18 r 2 4 N
uT, 4420850 - - N 0338040
i
Central portion - - of
2 -28L
Quad __Di%saL-&PAAk15LI__
sec 20 T 2LN R 28E-
UTM 2 2 N 0 s a k E
Mable "B" Mine
Jessup Mining District
Quad Desert Psak 15 I
~ e c 8 r 24N 28E
UTM 4420050 rr 0341020 i
Northern portion of
Jessup Mining District
auad. DesertPeak 1 5 -
sec 18 T 24N R 28E
UTM 4423020 0339000 E
Jessup Mining District
Quad: Desert Peak 15'
sec: 24 T. 2 4 N
R. - 27E
UTM : 4422030 0337030 E
One mile west of main
portion of Jessu~ Min. Dis
Quad: A r t . P P k ~
1 , g I
set: 22 r 24N R 27E
UTM: 4421 075 N 0334080 E
New Gold Ore claims? west
part of Jessu~ Mine Dist.
Quad: Desert Peak 15 I
Sec: 17 . 24N ,,27E
UTM: 4423035 N 0330075 E
Five miles west of main
Jessup Mining ~istrici.
Quad: Desert Peak 15'
sec: 17 2 4 ~ ~ . 2 7 ~
~ T M . 4423065 N 0.330075 E
Five miles west of main
Jessup Mine District.
Description
Sele_ct.d from dumps.. Silicifisd
vo 1canic-hig_hly-.a_1L.erd-_wi-tLfi -
staining..cross-cut
-- - - .- - . - - with veinlets
v 0.1 can i.c-br- cxn
trenchs and shallow shafts - - - - - -
--
Highly silicified and partly
- .- -
brecciated quartz veining in
-
highly altered volcanics..poss-
silver .mineralization.
- - -. . - - - -- - -.
Silicified v w i
-- highly altered and iron stained
- visable -. -. . - - - pyrite - - and possible
precious metals
c t.iiff hr2ccia
Silicified iron stained volcanic
- - - - - - - - -
breccia from an exposed vein near
a small shaft.
Gossan-like --- vein system with
- minor width near partly caved
shaft
-- From - highly silicified shear zone
selected from dumps near western
shafts..Gold..silver, pyrite,
copper.. vu=. an.3 1eache.d
-hartz veins in meta-seds near
old workings..copper and possible
silver mineralization
Selected from east-west t rench on
highly altered rhyolite intrusive
north of incline in meta-seds.

Sample Number
3875
2876
2877
2878
I
I
L~cation
Sample Description
Six miles -st of main I ---
J e s s Mining ~ ~ District I
Western most portion of - - - - ! --
Jessup Mining District
-I- Quad FireballRidg-e El-__
~ e c 19 2 4 ~ R 26E
UTM LL12075 ;J -Q3_l9QSn_ E
Description
Quad: Jneszr t h a k 1-5!--- . Iro.n~_stained contact material
Sec- 19
T .?4N ..._ R _211E-.- in s e-l s_ _n_ar~_.i ntrusig,.s 0 m 2
u:.,l: 4421085 :, 0.3. 29985 -. . . _ E . epidote and sulfides..frorn
S-G- milees__ w%s-tt. ?C. EL!---- trzn c h s-narshaf t s --
Jessup Mining District
Quad. --D-ezPea.L__ .P.aarrttly.-min-sra1ize:d argillic sds
~ec: 19 r. -24N- a -2_?JE__
I some copper..mostly turquois.
u
Quad: Fireball Rid~t 15' I Quartz veins in meta-seds near
Sec: 36 r . -2-4NN__ a -2.6E
UTM: 4418030 - 03281)~1)
Western most portion of - - - .- - . -- -- - ~ltered - -- volcanics -- and silicified
I
--- shears along the crest of ridge
- include arsenic, copper, silver
Southern portion - - - of -- the --- and -- possible gold..zones are
Truckee Minin~ District highly altered and oxidized.
S i 1 i c i ffiicd-i~onnee~ i n volcanlcs
--- hig_hly oxidized an3 iron-stained
-from - the duxs of the two southern
shafts.
Quad Fir-11 &L ' d g 2 5 L - -
Sec 19
T 24N R Z6E
UTM 4412025 N 031990_70-~
Southern mgst portion of
Truckee Mining District.
Quad Firsha1 1 Ri 9 ~ 2 15'
~ e c 8 -- T -23N~ 26E
UTM A15070 - N .Q321QL5-~
Middlezrtion of the
Truckee t in in^ District
Quad Fuxhdl R i i s
75T
Sec 6 T 3 R 26E
UTM 441 7050 N 0321000 E
Northern portion of the
Truckee Mining ~istrict
Quad FirRll Ridg? -1%.
~ e c 6 T 331 R 26E-
_ shallow -- .- . . _. ._. old shafts -- with 'dozer-cut
- maybe -- - - . silver - mineralization
assoicated with minor brecciation
. - - - - - .-
- . - - --
Jessup Mining District I in highly altered qtz veins
auad Fireball Ridae 15' ! _Elar.tly...hracci-ated quartz v e i ~ i n
Sec: 35
T 24N R 2 6 ~ .- shallow - - prospect
- -. - with iron-stain.
LITM: 4418045 ri 0327-OOOOt 1 I Minor sulfides.
S 2 l d e d f r n m R A -
.- side of canyon with copper, lead,
magnetite and minor silver.
h
I UTM: _ 441 _ 8025 _ _ N 0320030 E I minor copper, galena,pyrite'and
I Northern most portion of 1 possBBUe _pold/silver
Truckee Mining District
-
U~QT-~LQ SPU~R~ i rn 2 n ts with weak mineralization assoc.,
with small shaft
- Selected -- from a vein in a open-
_sLo p e - ~ c ~ f k m . L ~ -

Sample Number Location
Sample Description
Ouad. fiI&d~ki&~ 15:--
Sec 3.5 r ..24N_- R: 24EL ....
UVA: -. 441 .- 902
- -. . . 5 x 00.0_303~~
Black -- Warrior . - Peak --
Prospect
~
M-le WP . . D i . w li
Quad: &QL -~-.15 -I .-
UTM: 441 9000 pi 0307010 E
Black Warrior --- Peak pr-spgct
Nightingale Mining District
-.
Quad: _Kixan~____-- LC-
Southside of Warrior Peak
Nightingale Mining District
Quad: -~n 1-5-
20
Sec: -- T: 24N A, _24E_.
~~~:4412050 rrjo2P_3045---r
Southwest portion of the
Nightingale Mining District
Quad: Nixon 1 52-
UTM: 4423040 ri 0304060 -E
Crosby Mine
Nightingale Mining District
Quad: Nixon 15'
~ec: 2 1 T: 2LN R: 2LE
UTM: 4423065 N 0304060~
Crosbv Mine
Nightingale Mining District
Ouad: Firehall R i d ~ 2 15'
UTM: 4420075 ~0307030
Black Warrior Pros~ects
Nightingale Mining District
Ouad: Nixon 15'
UTM: 4421 050 N 03060'75 E
Southeast portion of the
Nightingale Mining District
Quad: Nixon 15'
sec: 22 T: 2LN R:-ZLL
UTM: 4423030 N 0305030 E'
Southeast of Crosby Min.e-
Nightingale Mining District
granodiorite..qtz vein material
. -- .~
with galena, copper, tetrahe.drit2
- -. .-. - . . - - - . - - - - - - - - - -- -
.Q -. . . .
uartz vein material selected
. . - - . -- - . -
p-rr.Swt - near limestone/grano-
. diorite . -. - . -. . -. - contact - -- some skarn zone
-. material - . - - - -. . - includes..sulfides . - -
and
epidote
Qtz vein in granodiorite includes
near shallow incline shows galena:
- - --- - - - -
pyrite, sphalerite, antimony,
- - . - - -- . - -.
tetrahedrite. and minor coDDer.
Sm.all_pr_~~spect adit on oxi,dized
- iron-stained vein with arsenides,
copp-sr and possible gold.
Qua-rtz veins associated with pegmatite
intrusive in lmstone -- ...
pyrite. chalcopyrite, coselite,
-- some - silver - -. - and minor tungsLen.
Chip,-p_e~dfromdkixm f
- mine . - -. ... Epidote, tungsten - - - -- - Argentiferous galena (?), py
-
. . - -- rite,
from incline on northside of
-- Warrior - Peak..small quartz_-vein - -. - -- - --
in incline.
From inside small incline on
in shear ...g ossan-like in part.
-
- - . - - vein
From pp s m a l l s1
dump - in a zone
~ of strong pyritization...with
minor tungsten.

Sample Number
2899
2900
Sample Description
Quad Ahon ~-1-5.'-. Frorn-_v.jLn._m.aLzr_L~~-i-n~mp_an~
Sec- 21__ T 201- fi 24~ adit with some skarn material..
. ~ -- ~ ~~.
UTM: 4423035
!23Oo4OC!L
I
E M ql~ , _ _~~riLc,c.hal_copyrite.si_l v e r
Digger #1 Crosbx-Mine
Nightingale Mining District
and -. . - - minor -- tungsten. -. - - - - --
Quda Fire ball.i-Jg.e_- .- lJ! - i Skarn-andnd.s-iliiif ad-sdiL!
~ec: 31 ~25N_
I
R . . . - -. . _ near lower adit and trenches with
. . -- -
UTM: 4429050
N 0301035-~ 25E tungsten and minor Pyrite
,
Jay Bird Mine --
Nightingale Mining Districl
Quad FireballRidge --15-- 1
~ e c 3 1 7 2LNp- P &EE--
Jay Bird Mine -
Nightingale Mining District
Quad Tohakum Peak 7& '
~ e c 15 -- T 25N- 24E--.
UTM 4433750 r: 030684Q_..~
MGL Mine
Location
Nightingale Mining District
Quad Tohakum P e a k 74
Sec 15 T 25N--a2&.--
Description
Gossan-like intrusive in open-pit
- - - - - . -. . - -. -
with pyrite and minor sulfides
S-z le cL_e2L.€r o~Aump..ska.rn..sili c a
garntiferous zone - with high-grade
tungsten.
C h i p p a d _ - f r o m m - a n A
arnet..with high grade tungsten
g
UTM LL33770
MGL Mine
?I Q306880 E -
Quad:
Nightingale Mining District
Tohkum Peak -- 78 I
- --
From . - contactzone with s-ilica
garnet, stron~ly iron-stained
UTM: 4433450 N 0307380~ with minor tungsten (?)
Southwest of MGL Mine
Sec: 10 Nightingale Mining District
auaa: Carson Sink 15'
23N
T.
UTM: 4515500 N
I Lake District
I
( ouad: Carson Sink 15'
29E
--
0353800
Silicified, brecciated rhyolite,
I amber jarosite crystals coating
--
fracture surfaces.
I
I Silicified, - brecciated rhyolite,
hematite staining, bladed clear and
white barite crystals in vugs.
1 Quad:
Lake District
Sec: T: A.
UTM. N E
.

Sample Number
2904
2905
I
Sample Description
Quad Adelaide 7 $' --
3 1 34N
Sec - - T .
40E
9 - -
UTM. 4513230
GR Claim
0456250 1 and . shale. - ---
Gold Run district
Quad: Adelaide 7 %' -
13 34N
Set: T: - R: 39E
UTU: 4518770 N 0454430 E
John Gomes property
Gold Run district
(luad. Books Spring 7 +it
Sec:
Location
1 33N
T. - .
A: 41E
UTM: 4511710 N 0473200 E
Iron Point claims --
Buffalo Mountain Area
(luad: Mt. Moses 15'
34 T. 27N 40E
Sec: A.
Description
Grab-samp le -o_f_d€illrut.tingsard
one abandoned drill hole. Limestone
-- - - --
SelecLsamplPfromgnear
workings. - - Gossan and chalcedonic
- - - - - - - - -- -
vein matter with an unidentified
- green mineral. Reported anomalous
- - - -- - - - --
Ni andCr values.
i Grab sample
~ in bulldozer trench(1owes t).
Granodiorite with heavy coatings of - . - -- -
--- limonite;-argillized and locally
silicified.
UTM: 4447210 - 046~50 1 and sparse malachite, -- and oxide
Rex Mines
Jersey Valley district
-- arsenic? minerals. -
(luad: Mt. Tobin 15'
Sec: 16 T: -- 39E
I UTM: 4479575 N 0448840~
Goldbanks Merger Gold Mine
Goldbanks district
I
30N ,,
I
Select .- sample of vein matter from
outcrop and dump. Quartz, limonite,
Sekrt sample nf rhnlrPrlnnir-u2np
matter from dumpandofpyritand
silicified rhyolite from a nearby
--
bulldozer cut.-
I
79nh I Quad: Golconda
~ec: 1
7%'
T: 35N
1
I Select sample from a single piece of
R: LaL I ore found on dump of adit just north of
UTM: 4537750
pit. Black. massive maxanese
Quad:
I' Golconda Mine oxide minerals.
No-E
Golconda district
Sec: T : R .
UTM: N -E I
Sec: T : R :
UTM: N
Sec: T : R :
UTM: N I
main
-

Sample Number
Locat~on
Sample Description
2907 o~dd Tohakum Peak NE 7h'
chi ppe-i- ~ ~ Q - ~ - C S Q Q ~ ~ ~
Sec 14 T 27N R -22-
UTV 4454000 N 0307500~
Nightingale Dist-rrct
Ouad: -Tohakum Peak NE 78'
Sec: 10 T: 26N R 2-UL
UTM: 4445400 N 010_1840_~
Descript~on
veinwith - -. macro tourmaline..pyrite, .
and -- unidentified sulfides. -
Unnamed
2908 Chipped from a series of 8-10"
veins in gruzzy granodiorite..
.- --
possible gold/silver mineralizatior
2909
291 0
Nightingale Distri-ct
Four Jacks Claims
ouad Tohakum Peak NE ?kt
Sec 10 T 26N R 24N
UTM 4445540 -- Y 0306000 E
Nightingale
Four Jacks Claims
Ouad TOhakumakI.8
Sec 10 T --
Four Jacks Claims
A I
Quad: aS t.nr Pa SP 7-
Sec: 13 T: 27K R: 19E
UTM: 4454620
Unname.3 Open-Pit
Unidentified
hJ 0261~~0
Quad: FOX &lJl-g3~,5 '
26N R 24E
UTM 4445070 N 0305900 E
Nightgale District
Sec: 9 -~:28N~.21F,
UTM; 4.466000 0276500 E
Cottonwood District
Packard or Sono Mine
Quad: Fox Range 15 '
Sec: 9 T: 28N R. 21E
UTM: 4465850 N 0276700 E
Cottonwoo,d district -
Packard or Sono Mine
Quad: FOX Range 15 '
Sec: 2 T: 29N R 21E
UTM: 4.476000 N 0279750 E
Cottonwood district
Wild Horse Canyon ~ i n g
Quad: FOX RUE? 1 5 '
Sec: 2 T: 29N R. 21E
UTM: 4476200 N 0279850~
Cottonwood district
Wild Horse Canyon Mine
'
-- - -
Cut- f-r-0~-s . e d i ~ a k y r n k a r l n ~ t 2
to ----- granodiorite..shales and siltstones..possible
uranium.
up-
- - -
Chipped--frpm a qtz vein, part2-g
brecciated and iron stained. The
-- early -_ prospecting in this part of
claim block is along quart veins
in the ~ranite.
Ope-n-pit in tertiary s~kim~nt.s
in contact with volcanic flows
Sample taken from wall in pit
in a zone of iron-stained -
ized and caliche.
Chipped from a vein in a shear
-- followed by t h e t . . v e i n
has calcite and fe-oxidation..in
limestone near contact with andessite
intrusive.
Gossan-like portian of the same
vein in upper workings. . vsi n is
2-3 feet thick and strongly oxidized.
Selected from large lump near
caved lower adit..qtz vein mater-
ial with pyrite, arsenopyrite,
silver and possible gold
Ghipged from qtz vein in a sh~a
. . r
zone..one of the small upper adits
with visable arsenopyrite, pyrite
3

Sample Number Location
Quad: Fox Rugc 1 5
Sample Description
e c 2 -- T 29N-- a -_21E--
UTM: 4475850 N 0280000~
Cottonwood ,district
Wild Horse Canyon Mine
Quad: Fox Ran~e 15' .
~ec: 2 T: 29N R: 2 1 - 6
UTM: 4475800 0280250 E
Cottonwood district
Wild Horse Canyon Mine
Quad: Smith-.
Sec: 20 T. 31N R:~?L - -
UTM: LL91785 hi IlaIiQm-~
Cottonwood district
Modoc Mine
Quad _Smj th w o n 7&
Sec. 20 T .-B
R 22F:-
UTM: Uq18- & 0-E
Cottonwood district
Modoc Mine
Quad: Smi t.h w n n 76 --
~ec: 1 6 T: 31N - R. -22E-
UTM: 44921 90 ii 02874rc5~
Cottonwood district
Modoc Mine
Quad: Klimi VR Pak 1 5
Sec: Tn-Tr +p v: T&E.-.
UTM: 4478570 K 0305650 E
Hooker district
Stormy Day Mine
Quad: _I(~~rni
VR P&
Sec: burveyed T: 20N R: -3/,F:
UTM: 4478750 N 0305706 E
Quad:
Hooker district
Stormy Day Mine
Betty Creek 71'
set: Unsurveyed~: - 30N :. IR: 2, F,
UTM: L478120 ~0310280 E
Hooker district
Unnamed prospect
Quad: Trego 78
sec: Unsurveye=i T. 3LN R: 2 2
. .
UTM: A52-20.50 ~0311860 E
f 1 sd
Uns.p.2~1
Cassidy Mine
.
Description
N-S veinin-adit 3-4 feet. t hick
with strong gossan-like alteratior
along the rnargin..minor breccia,
--
iron-staining.
- - .- . - . - -
_ S e l c c L e d f r o m m ~ b
main adit..brecciated qtz vein
- material_ with copper, sphalerite,
tetrahedrite, ~alena..veins in
limestone and granite.
. Selected .- -. .- from .dump an d chipped
from vein in the collapsed inclin:
qtz vein material in a 20 foot
shear zone..tetrahedrits,
-- - co
$&I e c t ~ from i ~LLIILP near mj 11 -site
and shaft(?) at the eastern mine
workings..qtz veins with pyrite,
tetrahedrite, sphalerite, and
minor coppers.
Selected from durnps..sku mat2
-- r
erial that i n c L u d m t u and
molybdenum..frnm near the m a i n
1 t,
JXippUu- veins r , a L
-- con~ac~..incluriesmolv, tungsten,
chalcowyrite, wurite..
Chipped from a vein in a small
along a vertical shear
bearing N60E
prospect -
Jk12-from-b
incline in the center of the
camp..chalcopyrite, pyrite,
tetrahedrite mostly in a hydro-
thermal breccia

Sample Number
222.L
2926
Lccation
Sample Description
Ouad Tre~o 73 1 I -
sec Unsurveye-l i -24N R ZGE---
UTM I Q31186Q_~
UnucifFci-Jistrict
Cassidy Mine
Ouad -Dr~Mountain NbI 74
sec UnsurveyJ_ T 33N R 24E
UTM 4508385 Y 031168Q
1 Unspecified district I
I Arcturus Mine -- -
I
LELzL I Quad Trefo Hot Spring 74'
2928
i2s!2!L
2930
-2XiL.
-a3-
sec: Unsurveyel T. 3LN R -26L
UTM: 451 5670 N 0328600 E
Quad
Unspecified &-act
Unnamed Mine
Tre~o Hot Springs 7h1
sec:
UTM:
Unsurveyed T:
451 5800
34N R. 26E--
N c 033 1000 -
Unspecifi. district
Black Star Claims
Quad. Trego Hot Sprin~ 7h'
set: Unsurveqed T: 341? R: 26E
UTM: 451 5910 LJ 0331000 F
Quad:
Unspecified district
Black Star Claims
Tre~o Hot Spring 73'
set: Unsurveved T: 34N R. 26E
uTM: 451 5685 N 0330590
-
Uns~ecified district
Black Star Claims
Ouad: Sheer, Spring 7h'
sec- 19 T: 3 2 N R. 37R
UTM: N 0331950 E
Stagg Minin~ district
Garrett Mine
Ouad: Sheep Spring 7?3'
- - -
Sec: 19 T: 3 2 ~ R. -27~
UTM: 4499320 N 033195Q.--
Sta~z Minine district
Garrstt Mins
Ouad: b d Horse r w ?&
sec: 21 T: 32N R: 27E
UTM. 4498300 N 0334300 E
Stagg Mining district
Windy Hill Mine
Description
~ 2 ~ ~ ~ t e ~ f r ~ l u m p
~hhcrr?a=l.~hrecCiawi~~p~rit
sid LC ,cha-l_c_o_py_rj_lte ,-py~it.iz. .
from - - - a - small - . - - shaft tha southside
of hill.
Ch.ippebfromcontactz~
selected -. -. - - from - -- dump..Poor - skarn
zone ... Tungsten(?) minor sulfides
_U&.d-fr.o m ,d pr- t s
qtz vein -- material in granite near
minor sediments tetrahe,drite,
.go_l_.- d/silver(?) copper old working:
A
. Channel . - - - cut on vein in a shallow
-
adit that bear NlOW and varies
in dip and thickness..also rem-
- --
nants of mill..no visable miner-
alization..~robably gold.
-- Selected from dumps and shallow
incline on northend of workin~s.
---
Minor pyrite in hydrothermal
vein systems local zones of stronk
--
iron oxides.
Selected .. . . -. from -- dump near old a h
- Copuer sulfides and o U d
possible silver mineralization.
' ts
Channel cut f r-u
adit..vein is a felsic material
in granite..sarnple taken outside
metal bulkhead..No viasable min-
erals probable gold related.
ct. on
northend of the property..vein
in NW shear strong hydrothermal
alteration..minor copper possible
precious metals
Chipped from qtz veins in shear
zone..some of the vein is a felsic
dike associated with country rx
which is ~ranite. no-visable
minerals..target thought to be Au,

Sample Number
2937
2939
--z%42-
Locat~on
Sample Description
Juniper Ca-nyon 7b
sec Unsurveyed T 31N R 28E
UTM LL90320 N 02!!d200~
Unspecified district
Sage Hen of Little Dude Claims
Guad: Juniper Canyon 741
sec: 35 T. 32N a. - 28E
UTM: L~94620 N UL~~.=E
Unspecified diistrict
U m a 3 me
Ouad: Juniper Canyon 7? 1 1
Bluewing district
Unnamed prospects
Ouad: Seven TrouAs SE 7$
Sec: 27 T: 2 9 N R- 28E_
Description
- C h -. i p pe-dfromveinal~ng~
zone with gouge material... small
shallow incline..fe-oxides.
-- Sebcted - - -- - from dumps near s h i n
dark-gray granodiorite..workings
- - -
are on qtz and breccia in a shear.
possible tetrahedrite, and gold
--
copper oxides and sulfides.
-
Sec: 33
I UTM: 4486290
T: 31N R. 27E
0333820 E I
-- Chipped from contact zone of
granites and older sediments
Unspecified district
Unnamed prospect
-- on what is probably a tungsten
. - .
prospect.
Sec: 33 T: 29N R- 27E
Red Butte district
Red Butte Mine
Quad: -0 7R - I
Sec: 18. .- T. 3 6
.
R: 33R
UTM: 45381 80- N 0378580 E
Unspecified district
Unnamed Mine
. Selected . - - - - from prospects in dozer-
cuts of exposediron stained vein:
--
possible Au.
SampJe from qtz veins in older
- sediments --- with alteration halo's
alonz the margins reported W02
-
UTM: 4468425 ~0344810 E
Seven Trou~hs district
Dean Tungsten Claims
Ouad: Placerites 73'
set: Unsurveyed T 33N R: 29E
Rabbit Hole district
Unknown Mine
Sample was taken from veins in
-
dozer-cut in middle of carnD.
----
Selected from dum~ near incline
sunk on shear with small atz vein:
Galena, -- possible silver minerals
Ouad: Placerites 7~3
Chippsi f r i-
sec: Unsurveysd T: 3 3 N R 3 9 E pect pit in area of extensive
UTM: 451 1860 N Q ~ dozer-cuts E on possible qtz veins
Rabbit Hole Utrict -- in older sediments..quartz brecci~
William Smith Claims
with strong iron staining.
auad: King Lear Peak 15'
Selected from dump near adit of
set: Unsurveyed T: 37N R: 30E small mine that did not produce
UTM: 075 N 0367131 5 E Rock is a silicifed volcanic
breccia.
Selected from dumps and exposed
qtz veins..strony iron-oxides..
galena, and possible gold/silver.

Sample Number
22fL-
Quad b o 7 -
Location
Sample Description
r .. -
Sec 18 T 3 6 N R 32E-
UTM - ! 7 ! - - zr 0378800~ galena, and possible silver,
I Unspecified district 1 vein .- is - - in~ranite -
Unknown
Ouad: - .Tunpd&!---
Set. 18 T: 36N R 221--
UTM: -300 Q~~WQE
~ec: 2 T: 335~ R. 3 6 ~
UTM: 4532000 0~_2506~)
Ten Mile district
W.P. Mine or Table Top Mine
Quad: Rose Creek 74'
See: 2 T: m-. ;: _?h~,
UTM: 4532100 i DWO8r) E
Ten Mile district
W.P. Mine or Table Top Mine
Ouad: *ret.t. Snri n p 7?( I
Sec: 16 T: 36N R. 36E
UTM: 4539700 N OL21LOO E
Ten Mile district
Unknown
auad: Barrett Springs 74'
Sec: 4 T: 36N R: 76E
UTM: 4541 430 PJ 0420700 E
Ten Mile district
Gold Crown (?)
auad: Barrett S ~rin~s 7h1
Sec: 1 T: 3- R:
UTM: 4541320 N 0426280 E
Ten Mile district
Description
Selected -- -- . - from- vein in an 4pan-stope-lar_ge
white atz veins_-with
S.alec teA. f r a m 2 7 4 t.
from vein along bedding plane in
. -
older sediments. .q tz vein with
- visable -. -. -- - ~aleng, possible silver.
Ouad:
Unspecified district
Unknown
T11ng.n 74 1
Chip-peed from wall in pr-spect-pit
sec: 24
UTM: 4.5323280
~:36N 2:3lE
N N ~
a massive sulfi.de mineralization.
also E qtz veins with P6, Ag,
Unspecified distri-ct - Pxrite, - - -- arsenopyrite. - .in:dozer-cut
auad:
Unnamed prospect
Ross C r ~ e k 7br - I Hi-raded from dump a n ore-bin
some qtz vein material from shear
included -- -- antimony, silver and
possible -- gold
I Quad: I
I UTM:
N I
Cut from vein in open-stope near
the upper. adit. .vein in shear
sample consist of gouge, qtz,
iron-stained and altered lime!-
stons..Antimony, silver and Auj?)
I;hippi-Lfsanuxpos~3 vein in 31 it
minor white atz, but mostly a
rhyoliLe breccia with minor fe-ox
A heap-lzach gold-operation
Selected from dumps v w y qt,z
veins with cockade structures
with chalco~vrite. tetrahedrite
minor iron staining in platy gray
sediments
. .
Selected from dumps -7.24 v2
material with little visable
mineralization . ..p ossible silver
sulfi,des ( ?)
in

Sample Number
2951
Location
Sample Description
Ouad Duffer Peak 15' -
Sec - SW 114 36 T -4 3N - R 30E
ui'd 4601000
Pure Gold #1
iq 0368350-E
Near -Dyke Hot Spring
Quad Duffer Peak 15'
set NElI41 T -- 4 2N F 30E --
u r ~ 4600950
Prospect
0369950 E
Near Dykes Hot Springs
Quad: Duffer Peak 15'
Sec: 2 6 T: 43N ,: 30E
UTM: 4603200 0367600 E
Middle Canvon /I3
Woodward Canyon Hot Springs
Quad: Denio 15'
Sec:
SW 114 2 46N 30E
9: --
UiM: 4638850
Dozer-cut
N 0367400
So. East of Denio Junction
Quad: Denio 15'
Sec: NElI4 2 T:
4 6N 30E
R: --
UTM: 4639700 N 0368000
Unnamed Prospec_t
Southeast of Denio Junction
Quad: Battle Creek Ranch 7 112'
sec: 27 T: 41N R: 27E
UTM: 4587690
Unnamed Workines
Varyvi lle
N - 0343630 E
ouad: Battle Creek Ranch 7 112'
sec: SW 114 T: 41N R. _;?ZE__
UTM: 4592430 - N 0344320 E
Open Prospect
Varyville
Quad: Battle Creek Ranch 7 1/2'
sec: 12 T: 41N B- 27E
UTM: 4594900 N 0348560 E
Unnamed Prospect
Varyville
Ouad: Battle Creek Ranch 7 1/2'
set: SW 114 6 T: 41N R: 28E
UTM: 4595450 N 07483313~
Unnamed Adit
Varyville
Description
kllgh-ly oxidized rquar t z vein. ,,partly
gossan-like, iron-stained with -
probable goldlsilver.
From vein in adit and dum~. Quartz
vein in metavolcanics. brecciation
--
iron-staining with coDDer oxides
sulfides. . .with reported gold.
-- --
Gossan-like quartz vein system with
iron-staining; mineralization included
copper sulfides and oxides, pyrite
and Au, AR(?)
Large copper rich quartz veins in
granodiorite, with bornite,
chalcopyrite, calcosite and reported
silver.
From exposed veins in dozer-cuts
copper-rich quartz veins with
chalcopyrite, chalcosite, oxides
and reported silver.
From trenches and dump near incline
brecciated copper-rich quartz vein
with sulfides and re~orted silver.
-
Open-pit exposes a fault-vein svstem
with copper mineralization sample
taken from the fault gouge and
selected vein.
Chipped from vein in fine-grained
quartzite..iron-staining possible
goldlsilver.
Selected from dumps by caved adits.
Galena, pyrite and possible silver
P Clmt-7-

Sample Number Location
Sample Description
Description
---
2959
1
I Battle Creek Ranch 7 112'
I
- I -QMeraed~iments occupied by hnsalL.
~ e c 7
UTM 4594610
None
Varyville
T 41N
N
R 28E Vein looks
-
like gplite dike in
- -
glass.
0348300.~ - -- - - -- - - -- - - - -
Ouad:
Sec: T : R:
UTM: N E
Ouad: - -
Sec: T : R :
UTM: N E
Ouad: -- - -
Sec. T: R
UTM: - N . - E
Ouad:
Sec: T: R.
UTM: N -.E
--
Ouad:
Sec: T. R: --
UTM: N E
Ouad:
Sec: T : R.
UTM: N -E
Ouad:
Sec: T: A: -
UTM: -- N E
Sec: T: R: --
UTM: N

Sample Number
2966
2967
Location
Quad Idaho Canyon 15'
Sample Description
Sec. 31 T 42N , 78E
UT, 4598200 0348500 6
Juanita Mine
Varyville
Idaho Canyon 15'
42N R: 28E I
Sec: 3 1 T :
Columbia MIne
Varyvi lle
I
Quad: Idaho Canyon 15'
set: NW 1/4 25 T: 42N R: 27E
UTM: 4599900 N 0346350 E
Bartlet Mine
Varyville
Quad: Duffer Peak 15 '
Sec: 35 T : 43N ,, 28E
UTM: 4607750 N 0355750 E
Snow Creek Prospect
Leonard Creek
Duffer Peak 15'
42N 29E
Sec: 3 T :
UTM: 4605850 - N 0363030 E
Unknown tungsten mine
Leonard Creek
aUad: Duffer Peak 15'
~ec: 6 T. 42N R: 29E
UTM: 4606000 N 0363450 E
Unnamed Workings
Leonard Creek
Quad. Duffer Peak 15'
~ec: 6 T : 42N R: 29E
UTM: 4606000 N 0363030 E
Unnamed Shaft
Leonard Creek I
Quad: Duffer Peak 15'
Sec: SW 1/4 2 T: 42N R: 29E
T : 4605500 N 0364400 E
Unnamed Workiggs
Leonard Creek Dist.
Quad: Duffer Peak 15'
Set: NE1/4 6 T; 44N R: 30E
UTM: 4620200
Adams Mine
Pine Forest Dist.
03611'00
.
Description
Selected from dumps by main shaft and
from prospects ... metasediments iron-
staining, wi th~inor sulfides.
Selected from dumps and prospects
replacement mineralization in
-
metasediments..arsenopyrite, Pb,
possible silver.
-
Selected from dumps and dozer cuts..
.quartz veins with minor sulfide
mineralization.
From prospect of bull-like quartz
near contact with sediments and
- .-
granite, Molybdenum, chalcopyrite.
pyrite, moly has large rosettes.
--
Selected from dump bv large adit and
--
from contact near upper-pit garnet.
silicified vein material minor coDDer
and tunasten.
Selected from dump and adit. quartz
---
vein with iron-staining, galena.
probable silver and possible gold.
Gossan-like outcrop in metasediments
very oxidized, vuggy, iron-stained
with possible Au/Ag mineralization
Splpctpd f m ~ i and t dump near
ore-bin..freee gold, minor copper
in narrow vien in dozer-cut.
Selected from upper adit on auart7
vein in metasediments, some brecciation
and iron-staining gold mine.

Sample Number
29 10
2971
2972
3971
Location
Duffer Peak 15'
Quad -
~ec: 13 1: 4 6 N
Sample Description
~ e c 2 T 4 2N R-- 29E
4619800
uTU - N 0363300E
Unnamed Prospect
Pine Forest Dist.
auad Duffer Peak 15'
Sec NW 114 34 - T 44N 30E
UTM 4611700 0365500 E
Unnamed Adit
Pine Forest Dist.
ouad Duffer Peak 15'
~ e c E 112 34 - T 44N R 30E
,TM 4611400 0366250 E
Unnamed Adit
Pine Forest Dist.
Quad. Denio 15'
Selected from dumps and exposed vein
- -. . -. - -
R BE- I in lower adit..contact~ne in
UTM: 4635900 0360000 I phyllites, garnet, tungsten.
Defense Mine
Warm Springs Dist.
Quad: Denio 15'
~ec: ,25 1: 45N A: 29E
UT,: 4632600 0359400
N _ _ - E
Vicksburg
Warm Springs DEt.
Quad: Denio 15'
Sec. 2 5 T : 45N R: 29E
UTM: 4632000 N 0359000-E
AshdownJine
Warm Springs Dist.
~ec: 25 T: 45N R: 29E
UTM: 4632150 N -Q~BXXLE
Ashdown
Warm Springs Dist.
---
Quad: Denio 15'
Sec: NW 114 1 45N ,: 29E
"1, 4629600 0359750 E
Cherry Creek
Warm Springs Dist.
Description
Se-1-ecteerom dozer-cuts. .contact
mineralization - in poor skarn zone lots
- of
silica - -- - - with - -- possible
- -
mineralization.
--
- -- tun~sten
.5g11e_cted from vein and dump near
old and shallow adit. Thirty inch
- --
vein is vuggy with pryite and
-
possible gold prospect.
29E 1 r-
---- From dump and exxed vein 3-4 -
- feet -- wide..strong -- Iron oxides possible
gold mineralization.
--- From quartz vein system that measures
in ten of feet..iron oxides and
brecciation..gold-silver mineralization.
Selectedfrom dumps lower workin~s
large quartz veins with massive
molybenite, minor chalcopyrite
cinnabar and silver (?)
Quad. Denio 15' 1 From the same dumps but earlier
Sec:
2 5
T : 45N R. mining..brecciated quartz with
UTM: 4632250
Ashdown
Warm Springs - Dist.
0359300
I
chalcopyrite and chalcosite.
Quad: Denio 15'
Selected from dumps serving the
eighth level further up the Mtn.
Brecciated quartz with pyrite
chalcopyrite and possible silver.
-
From eossan U e vetbrecciated
quartz with galena,
and possible goldlsilver.

Sample Number
2982
1 aul Railroad Point 15'
Sec NW 114 26 T 45N R 27E
UTM. 4629850
0345400 E
Painted Hills Mine
Warm Springs Dist.
Quad. Denio 15'
1 ;. 46N ,. 28E
Sec:
Location
UTM: 4645750 N 0358700 E
Hall Mine
Warm Springs Dist.
Quad: Denio 15'
Sample Description
Description
- Hot - --- - spring . environment ... very strong_
re-ocher staining with chalcedonic
--
silica and mercury.
Very large vein exposure at the-
surface is copper rich with oxides and
- --
sulfides of chalcosite and chalco-
pyrite and reported silver.
From a neEr vein system in the -
I UTM: 4648200 N 0361650 E ..unidentified sulfides.
-
~ec: 6 T: 47N R: 30E upper part of the Mine..with Cu oxides,
I Cowden Mine I
Warm Springs Dist.
Quad: Carson Sink 15'
I Lake District I
I I
Gnssan, hnt - m p a1 t ~ r hrerria;
~ d
native sulphur, gypsum, pulverent
cinn-brown. FeOx, some silica.
2983 I Quad: Carson Sink 15' 1 Kaolinized, chlorotized shale laced
-. - -- -
Sec
2
UTM. 44160150
Lake District
T
2 3N 29E
9 --
k 0354750 E
Quad: C-'
Sec: 2 T: 23N R: 29E
4416650
UTM:
Drill Hole MH 15
0354700 E
Lake ~istrzt
Quad: Osgood Mountains 15'
sec: 32 T: 38N R: 42E --
UTM: 4553200 N 4773250 E
Pinson Mine
rotosi District
Quad:
Sec: T : R:
UTM: N E
Sec: T: R :
UTM: N E
with calcite-pyrite veinlets, pyrite
has purple tarnish.
I
Drill cuttings, fine-grained pvri tequartz,
quartz grey from pyrite.
Selected sample. "At'-zone orebodv.
jasperoid in siltstone, fault gouge,
Fe Ox.

Sample Number
2990
2996
I
Location
Sample Description
Lake District
oUa, Carson Sink 15'
Set
I-- MnO-stained brecciated vein quartz,
I ,-
-. 1
2 3N
-- T
amber mineral (sphalerite?)
- - - -- -. - - -
UTM -- 4417700
y 0357350 -E --
Quad Carson -- Sink -- 15' --
1 2 3N 29E
Set - - T --- R
U;M 4417100 ---- 'I 0356 700
Vein calcite, -- --- cinn-brown Fe_o&_s_tain,
cubes . - - - of - - hematite-after-pyrite.
- --
E - - -- . -- - - - - -
I
Lake District
Ouad.RagPed Top Mtn- 7 117'
Set 2 8 25N , 28E
-
u, 4430000 0343380 -
r_
Copper King, Mineral Yon. Shaft
- - -
Copper Vallev District
UTM 4428550 >:
Copper Queen Mine
I
1
. .
Description
DZP sample, parnet, epidote. quaxz,
calcite
-
skarn, - -
clots Feox gossan,
. - -. -
melconite, Cuox some red-brown garnets
up to 3" across faces.
. - . - - - - - -. -
Quad Ragged Top Mt.n. - 7 112' CuoOx_:rLch gossan along shear zone-in
Sec
UTM
28
4429960
2 5 ~ ,28E
.; 0343160 c -
garnet skarn, melaconite, chrysocolla,
brick-red,
-- -- FeOx-stained jasperoid.
Copper King :*line, main shaft
Copper Valley District
Quad Ragged Top Mtn. 7 1/2'
Set 28 7 25N R 28E
UTM 4429920 ', Q343700 ;
I Copper King Pit
-- -
Copper Valley District
Quad Desert Peak 15'
Sec 3 3 - T 25N ,28E
--
Copper Valley District
Quad Desert Peak 15' - ]
Sec:
3 4
- T:
--
25N ,28E
.- -
UTM: 4427990
0344460 c -
Hard to find Mine
Copper Vallev District
-
Quad: ~ ~ Top eMtn. d 7 1/2'
12
25N , 2 8E
Sec:
1: .
UTM: 4435270 0347100 E
Ragged Top Mine
Ragged Top District
Quad: Carson Sink 15' -
Sec: 3 4 25N R 29E
UTM, 4427900 N 0353600 E
St. Anthony Mine
Toy District
i
--
-
Game t~epidnte-dcam, q-ua~t 7-ri rh endoskarn, some chalcopyrite.
-
Pale - red garnet skarn, some epidote,
calcite, clots pyrite, some endoskarn.
-
White vein quartz, gossan, pyrite,
clots melacon ite, green Cuox minerals.
1 Massive garnet skarn, red-brown
--
garnet, diopside, some epidote, quartz,
some pyrite, disseminated scheelite
(pale blue fluorescence).
W D p -
Quartz-rich skarn, FeOx and MnO stain,
clots and disseminations scheelite
(blue-white fluorescence)

Sample Description
I I
Sample Number I Locarion I Description
I
2999 1 Ouad: carson Sink 15' 1 DU~P
--
1 sec _ 34
- 2 5N '4 29E -- I
I - . - - . - - -
ui:A 4427800 O.?L~~OLE
St. Anthony Mine 1
-- - - -
Toy District
I Ouad -__ 1
Sec: i. -- R:
UTM: - 'J -. -
Quad-
Sec: - T. R '
UTM: 2i -- E
Sec: - TI' 3. --
UTM. - E
sample.
Med.! um_~o-Cin_e-grain~d_-q~ar warm.skarn,
FeOx and MnO, scheelite
crvs tals visible.
~ . -
I I
Quad: i ---
I
Sec: T: 2. --
UTM: 4 ----- -
-- - -
Quad: --
Sec. 1: - R -:
UTM: N - E
I Quad:
Quad
- -
Sec T R
UTM N E
.-

APPENDIX B

Element
Semi-Quantitative Spectrographic Analysis
Sample Number
C u (5) 2 0 10 5 100 10 50
La
(20)
50 5 0 5 0 5 0 50 5 0
Mo
(5)
N N N N N N
Nb
(20) L L 100 L L L
Ni (5) N N N N N N pp
Pb (10) 100 100 50 50 ' 20 2 0
Sb (100) L N N 2000 200 G10,000
Sc (5) N N 5 N N 5
S n (10) N N 5 0 N N N
S r (1 00) 100 100 N N N N
v (10) 2 0 2 0 20 10 L L
W (50) N N N N ' N N
Y (10) N N L N N 100
- Zn (200) N N N N N N
Zr (10) 3 0 10 500 7 0 10 70
Th
(100) N N N N N N
Analvsis bv Branch Exploration Research. U.S. Geol. Survev. Denver. Colorado
Fe. ~ g fireported , in'%, all other elements reported in ppm.
Lower limits of determination are in parentheses.
G P greater than value shown, N P not detected at limit of detection. < detected, but below value shown.

Element
Fe %
(.051
Mg %
(.02)
Ca %
(.05)
I Ti %
I (.002)
r
1 Mn(l~)
1 Ag(.5)
I As
(2001
i Au (10)
B(l~)
1 Ba
1 (20)
1 Be(1)
Bi (10)
Cd(20)
Co (5)
Cr (10)
Cu (5)
La (20)
Mo (5)
Nb (20)
Ni (5)
Pb (10)
Sb (1 00)
Sc (5)
Sn (10)
Sr
v
(10)
W
(50)
Y (10)
Zn (200)
Zr
(10)
Th
(100)
487
5
.5
.3
1
50
1
1500
N
200
3000
2
N
N
5 0
70
150
N
2 0
L
100
50
150
5
N
5 00
L
3 0
N
100
N
Semi-Quantitative Spectrographic Analysis
488
1
.03
.07
-02
200
500
L
N
50
200
N
N
N
2 0
10
150
N
N
N
10
100
5 00
N
N
100
5 0
N
N
N
N
439
15
.2
1
.07
G(5000)
10
700
' N
N
150
1500
5 00
N
20
N
100
N
Sample Number
490
7
.1
-05
. -15
I 150
2 .. 1
N I N
N
100
2 0
~(20000)
N
5
49 1
3 .5
( 1500 N
N
N N
N
10
3 0
5 00
N
N
N ! ?I
30
50
150
N
10
300
150
N
200
N
Analysis by Branch Exploration Research. U.S. Geol. Survey. Denver. Colorado
Fe. Mg. Ti reported in %, all other elements reported In ppm.
Lower limits of determination are :n parentheses.
G = greater than value shown. N = not detected at limit of detection, < detected. but below value shown.
15
1
5
-1
2000
2 0
N
15
N
100
N
!
492
15
1
150
150
N .
493
10
.5
1 .15 .1
-2
1000
150 , 50 5 0
2000 1 G(5000), 700
20
100
N 1 300
10
5
N
N
I
L
5 0
N
10
N
1
5000
10
N
N
100
G(5000)
1 L I N
I N 1 N
N
N
N
50 j 20
10
N
100
N
I
494
.7
.2
.7
.015
C (5000)
-5
N
N
70
G(5000)
1
N
N I N
3 0
L I 100 ! 200
~(20000) ~(20000) j 20000
N i N N
5
N I N
I
70
5 0
G(10000)
I
L
150
N
, N
7 1 7
N i N
10
N
20
700
L
15
20
100
300
N
10
N
10
N
-u
495
7
.7
1
I
.2
C (5000)
70 1
N I
300
N
50
2000
100
N
I
300 ,
C(5000) 1
L
!
N :
N I
200
10
1
' I
50
100
I
1
I /
200 ~~2nnnn)
N
200 ' 50
N
150
100
N
N
100
700
I
N
100 .
500
N
10
N
I
N 1 i

Element
Semi-Quantitative Spectrographic Analysis
Sample Number
Analysis by Branch Exploration Research, U.S. Geol Survey. Denver. Colorado
Fe. Mg, Ti reported in %. all other elements reported In ppm.
Lower llmits of determination are in parentheses.
G = greater than value shown. N = not detected at lim~t of detection. c detected, but below value shown.

Semi-Quantitative Spectrographic Analysis
Element Sample Number
Fe K
(.05)
Mg %
(.02)
Ca %
(.05)
Ti %
(.002)
M n (10)
, Ag(.5)
As (200)
Au (10)
B (10)
Ba
(20)
Be
(1
Bi
1 (10)
1 Cd
(20)
Co (5)
Cr (10)
C u (5)
La
(20)
M o
(5)
Nb
(20)
N i (5)
Pb (10)
Sb (1 00)
Sc (5)
S n (10)
Sr (1 00)
v (10)
W (50)
Y (10)
Zn (200)
Zr (10)
Th (100)
I
1478
10
.3
.2
-2
200
10
1500
N
7 0
500
2
N
N
N
10
150
7 0
70
N
7
150
L
10
N
150
5 0
L
5 0
N
200
N
14 79
200
1.5
300
N
15
2000
1 1
N
N
N
L
15
N
15
N
1480
100
1481
200
20 ' 30
L
L
I
i 5 I 5
1482
1483
1484 1485
1
.03
1
1 1
Analys~s by Branch Exploration Research, U.S. Gecl. Survey. Denver, Colorado
Fe. Mg. Ti reported In %. all other elemen!s reported In ppm.
Lower limits ol determination are in parentheses.
G = greater than value shown. N = not detected at iim~t ol detection. < detected. but below value shown.
7 0
50
20
1
1486 !
3
.I
1
.2
5
.3
5
.5
I 2
.2
.I 1
2
.5 1
.07 .3
L -05 .07 I -05 .05 .I i
.15 .1 .5 .1 .1 .1 .01 .15 /
5
5 0
I. 100
5
N
100
10
N
2 0
N
150
N
7 0 1 70
N
N
2 0
7 ! 7 5
10 , L
I
1 10
7 '
N
I N
N
N
L
10
L
N
N
N
N
1
1000 I
3
5 150 5 300 7 0
2 '
N
N
30
700
. 200
N
50
1500 '
200
5 0
5 0
500 1
N
N
3 0
500
!
200
N
50
500 1
N
N
3 0
500 1
2 00Q
50
1000
I
i
1 i
I
I,
N
N
N
L
20
. I *,
I
I f
1
I
1.5
l4
N
N
10
20
I
j
2
N
N
M
20
70
I
I
I
1
I I
i
j
I
L
N
N
.I
10
15
1
!
i
j
I
2
N
N
N
10
30
I
1
I
I
2
N
N
N
10
20
I
I
l
1
2
N
N
?I
20
I
j
]
1
1
I
I
100 1 N
5 I 15
N
N
L
10
L
5 0
N
200
N
I
N
100
5 0
3 0
N
300
N
N 1 N 1 N
20
I
I
I 10
N I N
5
5
N
N
100
50
. 50
N N I N
N
N
2 0
N
150
7 0
50 .
N
N
N
N
5
I 200
N
N
L
1,
50
3 0
N
70
N
N 7 0 1
70
N
7 1
N !
4
10
1
N
L !
100 .
N
5 0
N
7 0
N
7 I
L !

Element
Fe %
(.05)
Mg %
(.02)
Ca %
(.05)
Ti %
(.002)
M n (10)
Ag(.5)
As (200)
Au (10)
B (10)
Ba (20)
Be (1)
Bi (101
Cd !20)
Co (5)
C r (10)
CU (5)
La (20)
Mo (5)
Nb
(20)
Ni
(5)
Pb
(10)
Sb
(100) 1
Sc
(5)
Sn
(10)
S r (100)
v
(10)
W
(50)
Y
(10)
Zn (200)
Zr (10)
Th (100)
1487
1
.3
.05
.02
50
300
N
100
3 0
300
2
N
N
N
10
5
N
L
N
10
N
N
N
N
100
15
L
N
N
N
N
Semi-Quantitative Spectrographic Analysis
1488
1
.5
10
.15
7 0
50
N
N
30
1000
L
N
N
N
10
10
N
5 0
N
7
20
N
5
N
100
100
L
10
I
1489
1.5
5
.3
.3
50
10
N
N
3 0
1500
N
N
N
N
2o 1
3 0
N
20
N
10
20
N
10
N
200
150
L
N
I
Sample Number
1490
.5
2
G (20)
.07
3 0
I
1 20
I
.
70 ,
N
5
N
200
L
N
70
,
149 1
1492
N
N
N
N
N
7 0 100 5 0 200 200 150
N
N
N
N
N
N
Analys~s by Branch Exploration Research. U.S. Geol. Survey. Denver, Colorado
Fe. Mg. Ti reported in %. all other e!ements reported In ppm.
Lower llmlts of determlnatior: are in parentheses.
G P greater than value shown. N = not detected at limit of detectton. < detected. but below value shown.
3
N N
N
N
L 50
300 1 200
I
* 1 / 2
N
2
I 21 4 - i;5
1. .15
1500 ( 100
1.5 .5
7
1493
N
N N
N
N
L
N
10 1
N
10
!
1
50
50 i
I
i
I
I
5 5 15
I
i 50
i
1
I
50 I ! 50
50
70
15
I
1
L
300
F
1
I
I
I
I
I
!
N
L
30 '
N
~
20
L
5 7
I
1 !
N
20
150
I
1
1
I
N
10
N
L
20
N
5 0
, 70
l i 5 1 1 1
15
1 on ! 1 on
I
3 0
N ! N
150
5 0
N
5 0
G(1)
700
100
2000 1 5000
N
N
50 20 [ I I
, 5000 1 5000 1 I
5
I
N I N
500
200
N
5 0
3 !
N I
?on
I
I
i
1
!
I
i
I
I
I
!
!
!
!
I
I
I
I
I
I
-
. :
!

Element
Fe %
(.05)
Mg %
Ca %
(.05)
Ti %
(.002)
M n (10)
Ag(.5)
As (200)
Au (10)
B (10)
Ba (20)
Be (1)
Bi (10)
Cd (20)
Co (5)
Cr (10)
Cu (5)
La (20)
Mo (5)
Nb (20)
Ni
1
! (5)
Pb
(10)
' Sb
(loo)
Sc (5)
S n (10)
S r (1 00)
v (10)
W (50)
Y (10)
Zn (200)
Zr (10)
Th (1 00)
1794
.70
L
.15
.15
10
1.5
N
N
10
500
L
N
N
N
15
5
N
L
L
L
100
150
L
N
N
10
N
15
N .
200
N
Semi-Quantitative Spectrographic Analysis
1795
.5
.03
.15
.7
10
L
N
3 0
N
Sample Number
1796 1 1797 / 1798 1 1799 / 1800
7
150
1
.02 j .I .05 1 .07
L
.02
10
150
L
N
50
1500
L
N
N
1
30 1
500
1.5 ,. 1 '
N
N l
N
20
500
2
N
N
I
1
!
I
!
N
20
500
1.5
N
N
1 I
I
!
i
' I
N
20
500
2
N
N
I
1
!
I
N
20
1500
3
L
N
1
N
L I
N
L
N
L I
N
L
- N
L !
N
L I
20
500 j L
7 i 5
5
N
N
N
L
5 0
N
10 1
N
15
L
15
N
G(lOO0)
N
N
20
N
70
N
.07
.07
15
30
N
Analysis by Branch Exploratton Research. U.S. Geol. Survey. Denver. Colorado
Fe. Mg. Ti reported in %. all other elements repor:ed In ppm.
Lower limits of determinattcn are in parentheses.
G = greater than value shown. N = not detected at limlt of detection. c detected. but below value shown.
1
.05
L 50 15 1 15 i
10
3
10
N I N I N
L
N
150
L
L
L
,
, L
I
N I N I N I N 1 N
L
20
L
5
N
500
20
L
10
N N
100 150
N
N
.
10
.3
.15
I 5 i 15 i
10 L
N
i
N
L
15
N
150
N
I
/
15
! .07
15
I
1
.15
1000
1.5 3
I
15
N
N
L 1 5 1 L 1
N
i
I
500 1 N
L
N
100
300
2 0
70
10
N
L
30
N
50
L
500
N
1
1
1
I
I
i
~
j
I
i
I
I
1
j
1
i j
I
!

-
, Semi-Quantitative Spectrographic Analysis
~lement Sample Number
Fs ro5)
Mg r02,
bq
Ti O
&2)
M n (10)
Ag(.5)
As (200)
Au (10)
B
(10)
Ba
(20)
Be
(1)
Bi
(10)
Cd
(20)
Co
(5)
C r.
(10)
Cu
(5)
La
(20)
M 0
(5)
Nb
(20)
N i (5)
Pb
(10)
Sb
(100)
Sc
(5)
Sn (10)
Sr
(100)
v
(10)
W (50)
Y
(10)
Zn
(200)
Zr (10)
Th
(100)
2201
2 0
10
10
C (1)
2000
N
N
N
5 0
1500
N
N
N
2202
C(20)
1
5
-1
1500
5
N
N
300
200
1
N
N
50 1 20
100
200
N
15
15
N
2 0
5 0
N
50
N
700
1000
L
3 0
300
100
N
I 500 .
I
N
15
N
20
100
2203
G (20)
2
10
.05
C (5000)
5 0
N
, 2204
3
1
2
-2
500
N
N
,
200
100
50
1000
N
N
@
I
1.5
N
100
N
10
5 0
5000
N
2 0
N
3 0
5000
100 100
N
5 1 ~ 1 7
N
N
N
100 / 100 .
100 200
N
N
N
10000
10
N
N
c (10000)
-
N
N
5
20
70 i
50
L
N
10
I
I
2205
.5
.2
~(20)
-05
50
2206
1
1
Analys~s by Branch Exploraf~on Research. U.S. Geol. ~urvd~. Denver. Colorado
Fs. Mg. Ti re7orled in %. dl1 other elements reported In ppm
~owerlim~ts 0: Celermlnaf~on Are in ?arentheses
G = Qrzaler rhan v:'.~~ shown. N = not detected 31 :lrnlt ot delecllon. c delecfed, but below value shcwn.
N
N
N
N
C (5000)
1.5
N
N
N
N
5
N
N
I N .-
L
50 '1 20
N
I +-:
10 , 500
3
.15
700
L
N
N
15
200
L
N
N
- N
10
30 1
N
L
L,++
L
10
10 ! 100 t-.~+:-.LTNj+j
--
N
300
100
N
1000
10
. N
N
N
100
L
N pPl
L
I
I
I
-' \ - ,-
I
I
j
: 3 ,. 1,
I
i
I
I

Element
. ,
Mo (5)
Nb
(20)
Ni
(5)
Pb
(lo)
Sb (100)
Sc (5)
S n (10)
S r ( 100)
v (10)
W (50)
Y (10)
Zn (200)
Zr (10)
Th (100)
5 0
N
N
N
N
L
N
1000
300
N
N
N
10
N
Semi-Quantitative Spectrographic Analysis
Sample Nurr~ber
I
I
I
I i
j
.
Analysis by Branch Exploration Research. U.S. Geol. Survey. Denver. Colorado
Fe. Mg. Ti reported in %. all other elements repofled in pprn.
Lower limits of determination are in parentheses.
G = greater than value shown. N = not detected at lim~t of detection. < detected. but below value shown.
1
i
I
I !
I I
i
I

1
'
I
Element
Fe %
( 05)
Mg %
( 02)
ca "5)
Ti h 2 )
M n (10)
Ag(.5)
As (200)
Au (10)-
B (10)
I ( 2
Be (1
BI (10)
Cd (20)
Co (5)
Cr (10)
Cu (5)
La (20)
M 0 (5)
Nb (20)
N I
(5)
Pb
(10)
Sb (100)
sc (5)
Sn (10)
S r (100)
v
(10)
W
(50)
Y
(10)
Zn (200)
Zr
(10)
Th
( 1001
2237
3
.05
.5
.2
1000
3
G(1000)
N
100
G(5000)
1.5
2 0
N
300
N
20000
N
7
N
7 0
10
100
5
N
700
70
N
10
300
70
N
Semi-Quantitative Spectrographic Analysis
2238
-5
-5
.05
.07
5 0
N
N
N
100
300
2
N
N
200
10
3000
N
N
N
70
N
N
L
N
700
3 0
L
N
N
2239
10
.2
3
.2
2000
N
N
N
100
3000
N
15
10
50
N
2 00
200
N
70
N
I
Sample Number
2240
15
.3
G(20)
1 ! I N
N
70
N
10
N
N
7 !
N
3 0
N
10
N
2241
3
100 150
N
N
N
N
N
N
N
N
N
Analysls by Branch Explorzl~on Research. U S Geol Survey. Denver. Colorado
Fe. Mg. TI reported In YO all other elements repofled In ppm
Lower l~m~ts of determlnatlon are In parentheses
G = greater than value shown. N = not detected at llmlf of detect~on. < defected, but below value shown.
.2
1 .02 I .5
150 500
N
N
I
- N
30
N
150
2242
15
.05
7 1 G(20)
2
N
I .02
300
150
N
N
50
G(5000)
' N
L I L
50
N
20
N
2243
1
.1
.05
.2
500
200
500
N
200
300
1
100
50
L
10
2000
100
2244
G(20)
.5
2
-1
300
N
N
N
700
300
N
7 0
N
10
I 1
200
I
2245 1
5
1.5
2
N
N
N
5 0
200 1 1500
I
I 1
N I N
N
N
i
N
7
N
100
N
10
I
(
N
N
! N
10
I
N 50
N
N
N 70
I
15 30 5000 30CO
N
1000
N
1 XI
N
L
2 0
N
N
N
500
l o
L
N
N
N
I
N
10 1 500
5000
I
] 5000
N
3 0
15
N
15
N
1500
150
I
15
N
15
L
N
7
N I 10000
N
N
20
1500
5000
L
N
20 1
G(lOO0) 1
G(20000)
I N
I
10 I
N
N ~
10 30 ,
1 ' 10
N 1 N
10 20
L
N
7
7 00
300
N
20
N
7 0
N
1

Element
. .
I Sr (100)
I V
1 (10)
' W (50)
Y
i (10)
Zn
j (200)
: Zr (10)
: Th (100)
N
300
N
30
N
N
N
Semi-Quantitative Spectrographic Analysis
Sample Number
N
70
L
N
1000
30
N .
N
100
N
15
G(1000)
5 0
N
150
200
N
10
2000
3 0
N
L
300
Analysis by Branch Exploration Research. U.S. Geol. Survey. Denver. Colorado
Fe. Mg. Ti reported in %. all other elements reported in ppm.
Lower limits of determination are in parentheses.
G I greater than value shown. N E not detected at lim~t of detect~on. c detected. but below value shown.
N
30
200
100
N .
15
N ! N
100 50
N
N
150
150
N
10
300
L
N
2000
100
N
20
N
30
N
N
5 0
N
N
2000
N
N

Element
Fe %
( 05)
Mg %
( 02)
Ca %
(.05)
Ti hO2)
Mn (10)
, "(.5)
As (200)
Au (10)
B (10)
Ba (20)
Be (1
81 (10)
Cd (20)
Co (5)
Cr (10)
Cu (5)
La (20)
M 0
(5)
Nb
(20)
NI
(51
Pb
(10)
Sb (100)
Sc (5)
Sn (10)
I
i
S r
(100)
v
(10)
W
(50)
i
1
Y
(10)
!
;
Zn
(200)
zr(lO)
i
,
Th
(100)
7755
15
5
10
.05
3000
3 0
2000
N
2 0
2 0
1
N
N
700
15
20000
N
5
N
5000
150
N
5
N
N
100
N
N
5000
L
N
Semi-Quantitative Spectrographic Analysis
7756
5
.5
.1
.05
200
10
3 00
N
30
L
N
10
N
100
N
(20000)
N
15
N
300
10
N
7
N
N
3 0
N
N
N
N
N
Sample Number
2257 2258 2259
G(20) G(20) 20
.2 .15 I 1
.15 .07 .05
.3 .15 .03
300
N
N
N
150
100
N
N
N
200
N
N
N
N
N
N
3 00
N
N
N
N
15
N
N
N
Analysls by Branch Exploration Research. U S Geol Survey Denver, Colorado
Fe. Mg. TI reported ~n %. all other elements reported In ppm
Lower llmits of determination are In parentheses
G = greater than value shown, N = not detected at Ilmlt of detection. < detected. but below value shown
N
N
N
N
N
2260
7
1000 j 150 i 50 70
N
7
N
150
N
N
N
N
2 0
N
100
N
2261
G(20)
.2
7 1 .07
.5 .1
10
5 10 2 0
N
N
N
N
----
N
N
N 1000
2000 700 200 200
30
N
N
200 j 200
100 50
N
N
200
N
I
I
N
N !
N
N
1 700
N
N
N
15
100
1
N
N
200
N
N
N
150
100
N
N
N
300
N i 70 1 PI
I
15
N I N
N I N I I
1
3 0
7
5 ' L
N
150
N
N
1
I
]
:
N
15
N
N
,
I
N
3 0
L
N
N
7
N
100
N
N
1000
N
10
N
N
N
1000
100
N
10
N
5 0
N
I
I
2263 f
2262
2
7
.2
2
2 1.5 1
.2 .5 i
5 0 I 1000 I
15
N
I
3 I
1 200 !
N
N
loo
3000
1.5
i
I
15
500
1.5 1
N
I
N
L
150
N
30
500
50
N
I
i
15 1 I
10
I
/
100 1 300 1
G(20000) / 100
N N I
I
4
N I N
N N
I
7 0 100 1
3 0 500 '
N
N

I
-
Element
Fe %
(.05)
Mg %
(.02)
Ca %
(.05)
Ti %
(.002)
Mn (10)
, Ag(.5)
As (200)
Au (10)
B (10)
Ba (20)
Be (1)
Bi (10)
Cd (20)
Co (5)
Cr (10)
Cu(5)
1 ~a
(20)
' Mo
j (5)
Nb(20)
I Ni(5)
i Pb
: (10)
8 Sb (100)
Sc (5)
Sn (10)
S r (100)
v (10)
W (50)
Y (10)
Zn (200)
Zr (10)
Th (100)
2264
.5
L
L
.002
L
3
N
N
N
50
N
100
N
N
L
1500
N
15
N
5
N
N
N
N
N
10
L
N
N
N
N
I
1
I
Semi-Quantitative Spectrographic Analysis
Sample N um ber
I
I
Analysis by Branch Exploration Research. U.S. Geol. Survey. Denver. Colorado
Fe. Mg. Ti reported in %, all other elements reported in ppm.
Lower limits of determination are in parentheses.
G - greater than value shown. N = not detected at limit 01 detection. c detected. but below value shown.
I
I I
I
I
I i
1
i
I
I
I
I
I
i
i
!
I i
I
I i
!
1 I
I
I
1
++
I I
I
I
1
1
I
1
I I
i
I
I
6 !

. Semi-Quantitative Spectrographic Analysis
.-
-.lement Sample Number
1 -
2301 7 308 7 309
15
5
Ti
h02) -3 - -2 , -15
'
.002
M n
(10) 5000
?(.5) 150
As (200) I
Au
(10) N N ; - N .
B
(10)
Ba
(20)
Be
5 0
G (5000)
10 7000 7 0
Bi
(10)
Cd i
- - . .
2 I
-. -- - - - -
__ -.-_C_-
__+_
I
.1
N
(20)
Co
(5)
50 1
N
200
20 30" 1 N N I - N
[ -
N N I
N i 50 1 N N
---.
! ,
50 100 - ; 15 _ i 70 i
+ - -
Cr
(10)
Cu
(5)
La
(20)
MO
(5)
Nb
(20)
NI
(5)
Pb
(10)
7 0
G(2000) .
50 1
50
.
100
2000 i
- + -- - - . - t- N
50 i 15 -- r, 1 - 100 - 7 I ; 1000 ; L- j - 5 0 1 100 j 20
7-i
20000 i 500 ' 100 ' ; 150 . 1500 1 300 1 200 j 500
- . ---L -. .. --I .-.I
--
!
1 -.L ! r.-
i
30 ! L
I I
-
,
L
N
..' - I - 1-
-l -
I I !
N Ir----.-.- L ----, ; 5 . - -.. 1 , .------ 15 1 5 - - .- i 15 1 , 20
I
! N - - i
!
N _ I _ N 1 _. ___ _ . .. : . _. N ._ L i N . N
.. .-. --
2 0 30 50 i
,
-- - 150 7 -1- 1
--
30 1000 1 20
. . 2- -
1000 150 500 G(20000) j G(20000) ' I . 10000 G - i 50
- - . . - - . - . - - - 2 '
N
N [ ' 500 ! G(10000) 1000 j
Sb
(100)
Sc
(5)
S n
(10)
Sr
(1 00)
v
(10)
W
(50)
Y (10)
Zn
. (200)
Zr
(10)
Th
( 100)
2 0
3 0
700
-- -- - --
,
I
I I I
l5 -.I 7 . .-, : ... - - 15 . a N .-
I
30
700
I
1
I
I
I
N i N ..:-. j - -. 30 .-.-..I-- 20 N i
I
L . 1 L 150 ; L 300
1 1 1 -
!
- - . 1 - - - - . - - ! . . . - . - 200 - . - . - . , . - - - - - 200 . . . - - . . -. - L1000 I I
f 5 1 1 0 1 5
300 10000
711-_1_ I 20
-.
N
N i N ; ,. N i N 5 0 , - -;-.-/- ----- L 1 100
50 20 1 30 ' 2 0 k r
----
I 30 N 50 150
-----
Pi
3000 2000 I i L 3000 700 1 1500 1 ion~ j N
'.. - -, . ..... - ". -
I
150 . 100
70 i 150 N '
"
20 1 200 [ 20
-.--- ' .- '-4 .... .- - , . . - . - - - - - - . - - - . - - - - - - - - -
+
N
i
N I N j
I !
- - - - N ! N I N
L -.
!
..-- L
Anaiysis by Branch Exyorat~on Research. :!.S Ccr~l. SII:.~?~. Qenve:. C~larsC9
N -- I N
Fe. Mg. Ti rcportcd ~n ?ID, a!! olncr e!c~ieri;s rtl>orled ~n ; ip~.
Lower l~mits of deternl:~l~tlon Jre ~r! ;izrcn;heses.
G E great-1 '!!i:s v~lut jhO~il. N r nst de!?cleC a1 Ilnr~: CI delect;3n < de!p,ctcd. Cut celow value shovrn.
f

Slement
" &5)
Mg W
f.02)
ca '05)
Ti b02)
Mn (10)
?(.a)
As
(200)
Au
(101
- B (10)
Ba (20)
Be (1)
Bi
(10)
~d
(20)
Co
(5)
Cr (10)
Cu (5)
La
(20)
Mo
(5)
Nb
(20)
NI (5)
Pb (101
Sb (100)
Sc (5)
S n (10)
Sr (1 00)
v (10)
W (50)
Y (10)
Zn (200)
Zr
(10)
Th
(1CO)
2310 j
I
15
'O3
.2
-15 -
10 I '
50
N
N
5 0
3000
L
30.
N
70 1
G(20000)
.' Semi-Quantitative Spectrographic Analysis
Anaiyzis Dy Branch Exp~or~t~on Hesr.1r:h. l! S GCOI T,~I:;.L'Y. Oefi~r: Piior311':
Ft. Mg. Ti reported in %. ;]I1 other clrnierrl: rtrpi1rled 1;1 ppl.
Lmer llmlts cf determinalion are in :;l:enlht?ses.
'.13n ua'ur shown. N - not de!ecled a! :Ir I! ot r!c!rci~~n < EL'!~C:FC. CJ belo'u YJ~UC
G - graatrl
- i
Sample Nirrnber
r ---
I
I
.,--- ! L--- --f I -
I
I j +,-
!
I --- !
I
-
I I
I
I C
i- -r-
I ! , I
1 -A ..-+ 1
I
i I
i I- - -- -4 - --
-
I i
+- I
. I
I
t
I
! i
, i
-- I
-7- I
J i
j I
i
I
L
I
i _i_-_ !
1 ,
j
L ! ! ; -. . 1 . . - . . . . - -- - - . i - . -- . - - Ai - --
-.
I
I i
N l --L 1 L
I
I
I
!
!
I
1
I I I
10 I I -1 - . . - :
I
I I I
N , 11
I I
I -- -- - I - .- I
.). - ,
I I
I
I I
8
50
50 1 i 1 ! I
, ---.----- - i 7--
I
I
I
i
I
zh~vtrl
I -
I--- i--
----
,7 I ----r
I . I I i I
7 - - - ' 7 I
i
-- - .---- i
! .
I
1 i !
!
N I 1
--- -.-.------.-- - .- -*
1 I
I 1-
N I ..- - - -- i !- - - . . - .: i - . r-..
N I
i. - --t 1
I
L I I
. . ._ I ----
I
I
150 I I i t I
<
I
-
I
i
100 1 --- --- --- .I. -. - - - , ' . . I
. . -
1
.I j f I- -- - - i --- ----. i
I
..I - . . - 4 . I I----- -
I
N
I
. - - .- .- - .- . - . - . - - . - - - - - . - - - - - . - I i
I-----
I I
15 I I !
- . . , . . - - . .---. ---I ----- i !
N 1 I
- -
,
I !
.. i... - .I L.--L .---
L
---t--------
I
I

ilement
r05)
"' rO2)
ca "5)
Ti
b02)
Mn (10) 1
"(.5)
As (200)
Au (10)
B (10)
2311
3
. -07
1
.1
150
7
N
N
50
Ba
(20)
Be
11) I 1
Bi
(10)
N
Cd
(20) N
CO
(5)
Cr
(10)
30
700
100
I
Semi-Quantitative Spectrographic Analysis
2312
2 0
.1
5
-05
2313
20
.7
1
.1
1000 I 200 1
5 0 10
500
I 1000
N
70
5 00
N
15
N
50
15
Sample Number
2314 2315
5
.7
1
' -07
3
.07
1
.1
G(500) i 300
50 1 500
100 I 50
N
150
500
N -;
G(20000)
50
2316 1 2317
10 15
.07
1
1 1
.002 1
N -
100
G(~OOOO~ loo00 2000
2319
7
.07
.15
.1
I G(5000)
N I N N I N
I
1000 i
I
! 1 I
M 0
(5)
Nb
(20)
l5
N
5
1
10
pp
N 1 N i
5
L
I
5
N
N N
N i
(5) 50
5
5
Pb
(10)
Sb
(100)
Sc
(5)
S n
(10)
S r
(100)
1000
N
5
N
I
I 100 /
150 I
5
N
100
!
1
N
7
I ~~10000~~(10000)
I
1 L 10
----- I
1
I
v (10)
W (50)
Y (10)
Zn (200)
Zr
(10)
Th
( 100)
200
100
N
30
500
5 0
N
15
N
2000
1
N
1
N I N
50 i 200
150 1 L
!
-.,- +-
2 000
G(5000)
1.5
' 1000
N
5
3 0
300
200
2000
N
300
200 1 500
20
N
2318
.5
L
L
500 ' 100
!
70
L
700 i 200
500 1 N
N
5 0
200
7 700 ,
N N
Anaiysis by Branch Explorallon Research. US. Geol. Suruey. Oenue:. Coloralc
Fe. hlg. Ti reported in %, all oiher elements reported in p p .
Lower llm~ts of determinat~on are in parentheses.
G = greatmt :wfi 5~dlu!! shown. N = not detected dl Iln11: of detcctlor! < detected. but below value shown.
N
100
50 1 50 1 N
N J N I N I
500 1 5 N
L
I
500 ;
i
5 !
1
50 1
!
7 !
I
I
50 1 100 1 L / 50 -1 2000
) N 1 3000 i 700
N 200 . L
70
200
20 f 10 10 10 1 j 20 1
-
500 7 00
500 100 200
500 j ' 700 100 50 100
I
1 100 100
N
1
N -. N
N
100
N 200
1
5000 '
f1 I
+- 1
N
100 t 2 0 100 ,
- -
.-
I

I
1
Semi-Quantitative Spectrographic Analysis
Element Sample Number
-
Fe %
(.05)
Mg %
(.02)
Ca %
(.05)
Ti %
(.002)
Mn (10)
Ag(.5)
As (200)
Au (10)
B (10)
Ba (20)
Be (1
Bi (10)
Cd (20)
j CO(S)
I C;lO)
I Cu
i (5)
La
1 (20)
1 Mo
: (5)
i Nb (20)
N i (5)
Pb (10)
Sb (100)
Sc (5)
Sn (10)
I Sr (100)
v (10)
W (50)
Y (1 0)
Zn (200)
Zr (10)
Th (1 00)
2320
20
2
.3
G(1)
G(5000)
.5
N
N
200
700
1.5
N
N
150
150
500
N
10
L
100
3 0
L
50
N
L
300
N
70
L
150
N
2321
5
.3
3
.15
200
.5
1000
N
300
200
2
L
N
7
100
2 0
N
7
N
15
20
N
7
N
L
200
N
15
N
100
N
2322
7
3
5
.02
2000
N
N
N
15
70
L
N I N
G (500)
2323
10
.3
1
.1
300
N
5000
N
200
200
15
15 1 10
20 ' 1 100
100
N
5
N
!
N
50
N I
10
100 . 50
I
G (20000)( 100
N
L
N
100
2 0
N
10
G(10000:
N
N
L
10
20
- 100
100
N
100
300
100
N
I
Analys~s by Branch Exploration Research. U.S. Geol.
Survey. Denver. Colorado
Fe. Mg. Ti reported in %, all other elements reported in ppm.
Lower lim~ts of determination are in parentheses.
G = greater than value shown. N = not detected at limit of detection. < detected, but below value shown.
1
1 -
I I
I I
! 1
i
I
!
I
I
I
I
I
I
1
I
1
I
I
I
1
i
I I
I
I
I
I
!
!
I
I
I

, Semi-Quantitative Spectrographic Analysis
.-
dement Sample Number
'"05)
" "2)
r05)
Ti %
(.002)
Mn (10)
lg(.5)
As
(200)
Au
(10)
B (10)
Ba (20)
Be (1)
Bi (10)
Cd (20)
Co (5)
Cr (10)
Cu (51
La (20)
M 0 (5)
Nb (20)
N i (5)
Pb (10)
Sb (1 00)
Sc (5)
Sn (10)
Sr (100)
v (10)
W (50)
Y (10)
Zn (200)
Zr
(10)
Th
( 100)
2324
15
5
20
.3
5000
2 0
500
N
50
70
1
N
N
15
70
20000
N
N
N
3 0
N
200
20
N
200
150
N
2 0
1000
50
N
2325
5
-03
L
.015
5 0
5
2 00
N
5 0
100
L
N
N
N
15
G(20000)
I N
2326
.5
.2
.1
.5
100
N
N
N
70
200
1,.
N
2327
1
.2
-05
.015
20
5
N
N
100
1500
15
N
N / N
N
2 0
I
2328 1 2329
2 0 20
-3
-3
G(10000)
20
1000
.3
L
.2 1 .01
2330
10
3
5
.7
1500
1
200
1.5
20
L
,
1
5000
1.5
N
300
I
1
G (1000)
150 1
N
N
50 i 7 20
150 1 10 700 1000
I
100 5 0 N
N
N
N I N I N N
N
N
N
2 0
N
15
N
N
10
N !
L
5
N
100 .
15
L
20
3000
5 00
300
I
7 1 5 7
i 1
150
1000
N
300
N
N
2 0
2331
5
-2
1
-007
G(5000)
L
N
N
10
G(5000)
2
N
N
2 0
15 1 10
150
100
N
N
10
N 110000 1 20000 50
N 5000 / 3000 I N
N
500
15
2332
10
3
7
1
3000
2
N
N
7 0
5000
2
N
N
2 0
150
30 1 1500
OC
150 I '
N
I
N
10
150
N
N
.---
20 1 20
NT N
10
N
10
150
I
20
20 .
500 100 N 3000 1000 2000 i
L 5 0 15
L
N
L
N
N
N 300 30
N
N
N N
--
Analysis by Branch Exploral~on Research. U.S Geoi Stirvey. Denver. Colorjdo
Fe. Mg. Ti reported in YO, all other elements reported ~n ppm.
Lower limits of determination are in parentheses.
G = orester than value shown. N = no1 delecteo at ltm~t 01 celectton. < detec:ed. but below value shown.
!
I
7 00
I
N i N
i

-
dement
" If05)
"' Po21
" 'i~cs,
Ti 11002)
M n (10)
EP(.5)
As (2001
Au (10)
B (101
Ba (20)
Be (1)
Bi (1'3
Cd (20)
Co (5)
Cr (10)
Cu (5)
La
2333
10
.2
5
.07 -
2000
1000
G (10000)
N
100
150
L
15
G(500)
(20) I N
Mo
(5)
Nb
(20)
NI
(5)
Pb
(10)
S S
(100)
Sc
(5)
Sn (10)
Sr (loo)
V (101
W (50)
Y (101
Zn (200)
Zr
(10)
Th
(1W
15
7 0
1000
N
N ?
10
G(20000) i
1500
20
N
100
15
50
N .
C (10000)
10
N
. Semi-Quantitative Spectrographic Analysis
Sample Number
- -- -
.1
.02 1
L
. 150
N
'
3 L I
I
I .2 1 .02 .15
---
------ ..
20 200
N
N
-A-
N 15 i
7
I
N N
I I
10 150 1 20 ! N 2 0 5 0
7 1 G(20000) 100
-- - 7-- - .r_ _- .......... -
' I
I
N i - -- N .. --, I . . L I
N ,
N N I
i N i N
- . - - --- N - j 3
- . i-. .- . -- -.J .
1 1
I ---A . - . ; - . -.., - .
N ,
I 1 VTP--
N ' N ! N I N [ N I
' - 3 0 ,
- 5 i 70 1 50 i 5 1 0 1 10
)_^__ _. - :
_A___- r-
20 1 70 1 300.1 70 G(20000) 1 2 0 0I T 7 0 1 50
I- -. -- - - - -
--
N ; 300 ' N
N I j 1000 I N i 200 i
____._C _ _ __ T-
5
5 1 10 1 20 I ---
_/ .... , - .
N i -! -
........
I
I _ _ _ _ _ _ . ..... 7.. - --- -.
L
I
1
150
L
700
L f
-.I ...............
50 j
;
50 1 00 5 0
1 -- - - -- - .-1.
N ! 1
.....
lo 1 lo
I- . - . - .. .-
. - ......-.-... -1
. N 'C(10000) i 500 , 700 I
-.-..... ..... ,. -
50 j 1-50. ; L I N- -,----
- I - ... I -~TO
-+.
N i N
N
I I
-------
N I
!
1 N
- . --. ........ 2 L
Anillysls Sy Brancn Ex?loralton 8z;arrrch. U S. 5eoi Su:.,e.{, [lrnvy!. C:;lo:;rv;:
Fe. Mg. Ti reported ~n YO. ail 3;ber eie:ner;ls ic!;)rJlidd ~n pjm.
Lvaer :lrr.iIs of deIc!rn;nal~on re in parenlbescs
G = grea!~! :run ,/~lu rhcwn. N = no1 delectcd al :!~;II
01 CLI:!CI$~~! .C c!clec:e3. 31.11 D~IJW valire shown.

Element
Fe %
(.05)
Mg %
(.02)
Ca %
(.05)
Ti % .
(.002)
- Mn (10)
*O(.5)
As (200)
Au (10)
B (10)
Ba (20)
Be (1)
Bi (10)
Cd (20)
Co (5)
Cr (10)
C u (5)
La (20)
Mo (5)
Nb (20)
Ni (5)
Pb (10)
Sb (1 00)
Sc (5)
Sn (10)
Sr ( 100)
v (10)
W (50)
Y (10)
Zn (200)
Zr
(10)
Th
(100)
G(20)
2342
.02
.05
N
20
100
N
N
200
100
N
L
N
G (2000)
N
G(2000)
N
20
N
100
70
N
N
N
L
L
N
N
1500
10
N
Semi-Quantitative Spectrographic Analysis
2343
2
-2
-07
.15
15
500
lnoo
N
70
2000
1
100
L
15
2 0
200
N
10
N
10
G(20000)
L
N
N
L
50
N
N
7000
100
N
2344
2 0
7
10
.2
5000
15
N
N
50
700
10 .
N
N
70
100
5000
N
2 0
N
70
5 0
N
15
L
300
300
1000
15
N
100
N
Sample Number 2
2345
5
.7
.5
.15
100
150
N
N
. 70
1000
' 1.5
' 500
2346
2347
1.5
.05
L
-05
150
Analysis by Branch Explorat~on Research. U.S. Geol. Survey. Denver, Colorado
Fe. Mg, Ti reported in YO. all other elements reported in ppm.
Lower limits of determination are in parentheses.
G = greater than value shown. N = not detected at limit of detection. c detected. but below value shown.
2
-7
.1
.1
5 00
-5
700
I 100
3000
N I N
5
N
. 150
5 0
L
N
N
100
N
100
L
N
N
50
i
3 0
500
1 i L
,2378
20
.15
20
.01
1 G(5000)
1.5
2000
N
50
G (5000)
10 ,
2349
.1
.02
L
.002
2 0
15
L
N
2 0
100
N
N
N
N
L
L
N
in000
100
N
2350
1
.7
2
.05
200
1
200 ,
500 1
I N 1
3 0
20
N I
200
N I
N
N
I
N
N
N
N
N
100
hT
50
! I
I
N
50
N
15
I
I
1
N
15
; I N
10
N
10
I
!
N
20
50 7
I
1 20 30 5 1100 1
N j N ~ N I
I
N ~
I
I N
N
15
I
L
N
2 0
50
N
I
1
N ~
7
5000
I
, 1
I
1
!
5
N
5
50
L
I N.
5 1
1500 1
L
N
10
5000
I
I
t
N 300 N 5000
L
N
N
L
2 0
N
N
50
N
N
N
L
15
L
N
500
5 0
N
N
30
1000
200
50
N
N
N
N
N
N
N
5 0
L
N
300
N
N
I

Semi-Quantitative Spectrographic Analysis
Element Sample Number
Fe %
(.05)
Mg %
(.02)
Ca %
(.05)
Ti %
( ,002)
Mn (10)
Ag(.5)
As (200)
Au (10)
B (10)
Ba (20)
Be (1)
Bi (10)
Cd (20)
Sc (5)
Sn (10)
S r (100)
v (10)
W (50)
Y (10)
Zn (200)
Zr
- (10)
Th
(100)
2351
20
.05
.05
.02
2000
N
2 00
N
3 0
700
L
N
N
N
N
N
L
N
10
200
3 0
N
2352
.05
.5
.5
L
10
700
N
N
2 0
N
N
N
N
N
N
N
10
L
N
300
N
N
2353
C (20)
.1
.15
-07
5000
100
700
N
300
G (5000)
2 :
N
N
L
N
G(5000)
50
N
15
2000
10
N
2354
15
.I
2355
10
I ,
L l 5 1 7
200 2 0
N
L
Analysis by Branch Exploration Research. U.S. Geol. Survey. Denver. Colorado
Fe. Mg. Ti reported in %. all other elements reported ~n ppm.
1
.03
C(5000)
N
N
N
1000
5000
L
N
L
10
N
-5 1 .7
' 2356 2357
7 7
.02
Lower limits of determination are ln parentheses.
G = greater than value shown, N P not detected at l~mil of detection. < delected, bul below value shown.
.5
.1
G(5000)
500
3000
N
. 100 L
I
1
N
N
! N
500
30
15
G(10000)
50
N
3
.15
1000
3
N
N
30 1 50
500 3 00
1 G(500)
I
100
150
N
1.5
N
1000
N
2358
1
100 1500
~(10000) G(10000)
N
N
50
100
1 1 N
N ! N
l5 1
500
100
N
i
150
L 1 150
150
20
L
N
1500
N
N
2359
20 I 2 I
!
I
.15 j
G(20) .05 1
.1
1000 1
.1
30
1
/
1
G(2000)
1000
L
20
7
700
150
N
2 0
10000
10
N
100
! 10000 I
N I
I
L
50
N
7000
50
N
I
I
70
500 i
1
L i
N 1
G(500) 20 1
1
I
I
I
i I
I

!
Element
Fe %
(.05)
Mg %
(.02)
- Ca r05)
Ti %
( ,002)
M n
(10)
- *O(.5)
- --
As (200)
Au
(10)
B
(10)
Ba (20)
Be (1 1
Bi (10)
Cd (20)
Co (5)
Cr (10)
Cu (5)
La (20)
Mo (5)
i Nb (20)
1 Ni
(5)
' Pb
' (10)
Sb (1 00)
Sc (5)
Sn (10)
Sr ( 100)
v (10)
W (50)
Y (10)
Zn (200)
Zr (10)
Th (1 00)
2 360
C (20)
.2
.1
.07
500
150
500
N
150
5000
2
200
N
50
10
G (20000)
N
7
N
70
3000
3000
7
N
L
150
N
L
200
5 0
N
Semi-Quantitative Spectrographic Analysis
2361
.05
.03
.05
.7
15
N
N
N
20
500
N
N
N
N
15
50
N
N
N I
5
N
N
5
N
N
15
L
N
N
2 00
N
2362
.3
.02
L
-3
150
N
N
N
50
2000
1.5 .
N
N
N
10
50
N
L
N
5
N
100
N
N
L
15
L
N
N
150
Sample Nurr~ber
2363
N
N
N
N
Analysis by Branch Exploration Research. U.S. Geol. Survey. Denver. Colorado
Fe, Mg. Ti reported in %. all other elements reported ~n ppm.
LOwer limits of determination are in parentheses.
3
2
5
, .2
1500
3
1000
N
200
300
' N
N
I
N
N
150 /
20
L
5
2 364
2365
N I N I N
G P greater than value shown. N P not detected at limit of detection. < detected. but below value shown.
20
.1
.05
.15
15
150
G(10000)
N
5 0
150
L
G (1000)
N
100
10
20
.2
.05
-07
100
150
700
N
5 0
500
2
2366
.15
.05
.02
1000
.7
700
70 N
3000 i ~(20000)
I L , I N
10 500
N
N
50
50
L
N j
~
20
15
150
,
j
10 1
5000
1000 I
2 0
200
N
N
10
N
100
N
10
10
N
I
i
!
N I
7 I
100 1
-4
I
7
5 j L
N
N
N
N 1 150
N
N
N
N
. 100
100
N
3 0
300
200
200
3 0
-- N
10
N
3 0
10
7 o
N
N
N
10
L
N
L .
N
N
2367
2 1 2
N
-N 1 10
2 0
N
200
100
10
500
50
15 30 1
N I N !
N I
N
10
N
N
L
15
N
2 368
1.5
.3 1 1 i
L
.02 1
.07
.07
I
1
200
10
700
L
L N i
j
N I N
3 0 20
N
1
N
N I
N
N
N
I N I f
10 - 10 /
4
N
1 15
N
N
L
5 0
N
0
,
I
i
1
150 I
I

.i . .
. , > : , .
Semi-Quantitative Spectrographic Analysis
.ement Sample Number
2369 23i0 )3?1

Semi-Quantitative Spectrographic Analysis
:ment Sample Number
Fe &s,
2378
1.5
Mg %
(.02)
Ca YO
(.05)
1
2
Ti h02) .1
M n
(101 1000
AS
(5)
10
As
(200) 300
Au
(10) I N
B (1 0)
Ba (20)
8 e (1
100
500
3
2379
.15
-02
.07
.002
L
2000
500
N
15
100 I
2380
.5
L
L
.015
300
100
I
L j 1.5,.
2381
- 7
.05 '
2382
2
.15
L
L
1 .03 i .3
N 1 N
,
Bi
(1 0) N 260 I 200 GI009 10
cd
(20)
Co
(5)
:i0)
1
1
N
?!
30 1
140
. N
10
I
1
100
N
L
i
1
30
N
10
1
1
i
N
5
109
1
is) 30 5000 500
ia
(20)
M o
(5)
I
1 N
I 2 0
100
I
I
3
50
.
2000 10
Nb
(20)
N
N
N
N
N
V i
(5) 5 0 5 I L
5 10
'b
(10) 150 1000 150 5000 100
S b
( 100) ! 200
Sc
(5)
;n
(10)
L
Sf (1 00)
I (1 0)
.V
I
(10)
7200)
:r
(1 0)
-h
(100) ,
N
L
7 0
2 0
300
50
N
L
1000
L
7 0
300
N I N ! I 3
15
150
10000 1 1000
N
N
i\l
N
N
N
300 '
N
N
I N
N .
10
N
1500
L
N
I
100
7 0
5
100 1
150
1.5
2383
3
.3
5
.2
2000
3
200
N
70
700
1.5
15 I
2 384
3
.2
.3
1 .15
300
10
200
1J
100
500
2
50
N I 300
, .-,
7 0
2009 lo-- 1 30
2385
1.5
.3
.3
.07
300
7
N
2386 1
2
.02 1
7.05
I
1000
L : 1 1
1
N
N
!
i i
?I
!
1 I
i
5 1 N ! 7 /
I 1
I
30 f 20
5 (7
30
N 1 2 0 i 20
L
N
s I ~
N
10
N
N j N
N
300
10
N
I
5 0
15
M
200
N
5
300
N i N
30 1 50 1
70 70
15
L
N
1
1 I f
50
5
N
j
N
N
1
I
i
15 15 -
N
N -7-
.on
Analys~s by Branch Exploralion Research. U.S. Geol. Survey, Denver. Colorado
Fe,
-
Mg. Ti reported in %, all other elements reported in ppm.
Lower limits of delermination are in parentheses.
G greater than value shown, N - not detected at limit 01 detection, c detected. bul below value shown. \,I F ~ &
I
20
?J
3 0
5 0
L .
N
30
1500
X I ?I
5 5
N
300
200
2 0
200
100
N
N
L
70
2 0
1500
70
N
15 ( 50 1
I
200 ' 1 100 i :
I
N N 1
L
r ~ '
N I N i
N
L I 20C
30 30
N
N
!I
1

Semi-Quantitative Spectrographic Analysis
msnt Sample Number
Co (5)
Cr (10)
Z L'
(5) 3 o
ia
(20) L
Mo
- (5)
N
Nb
(20) - -
.A i r-
(5)
i 5
?b
(:it)
Sb ( 100)
sc (5)
,' n i
(10)
5 r (loo)
I (10)
>v
(50)
,'
(10)
T n (290)
Zr
(10)
'h
(100)
N
20
N -
150
.
N
N
N
15
N
1.
L
3 0
N
N
10
L
L
N
?I
5
700
N
N
L
1 15
3 o ! 70
I
I L I I,
N
I
2 0 1 N
20 ! 10
N
N N
2 0
I
N
?i
70
N
N
200
30
N
1
1
N
N
70
N
N
N
10
N
I
.
N
300
150
N
7n
N
100
N
I
1 I
1
N
N
70
N
N
N
30
N
1
N
L
30
N
T
N
20
N
i
I
1
I
1 +y 1 I
I I
I d
i
I
Analysis by Branch Exploration Research, U.S. Geol. Survey, Denver. Colorado
Fe, Mg. Ti reported in %, all other elements reported in ppm. :-1~3;& ~~7 -.
Lower limits of dcternir;ailon are In parenthesps.
G I greater tkrn val!.r! .-' 5rr;n. F: - ,, !I?! ".-:c.'!.:d a1 limit of detection, < detected, bur hci~w value shown. ;LB&
N
10
3 0 1 7
5 50 1 5 I L
N
N
I 30
N
15
L
N
N
150
N
L
i
L
N
x
L
I,
N
j
I
I I
i
17
I
I
I I
I
I
i
I
1 1
I 1
I

'"05)
" "2)
'a r05)
Ti i!O02)
hl n (101
"(.5)
As
(200)
Au
(10)
B (10)
Ba (20)
Be
(1)
Bi
(10)
Cd (20)
co (5)
Cr (10)
cu (5)
La
(20)
Mo
(5)
Nb
(20)
N I
(5)
Pb
(10)
S b
(100)
Sc
(5)
Sn (10)
Sr (1001
v (10)
W (50)
Y (10)
Zn (2001
Zr
(10)
Th
(100)
2401
2
-15
.3
.15
70
7
N
N
10
150
N
1,
N .:
5
5 0
N
N
N
7 00
30 ,
L
N
N
15
N
. Semi-Quantitative Spectrographic Analysis
Sample Number
.05
- N
-02 I .02
r ----?I-T-----
.I5 I L 1 ' .05 .5
N 20
I
N
50
I
1
N
50
N
3 0
N )-- ! I
I
N
100 7 0
200 5 00 N 100 100
2
i -
1 3 1
1
1 N
I
N
N
N 20 1 - N
i 30
I
I
N
N i NI- I N : N i 30 I N N 100
N N 1 N 1 15 1 - 15 1 2o i
--+-
--
N 1 5
i
10 I L j 100 i 100 N j 20 L
L1
10 1 15 1 200 :
- . ... . . . . . 1 I.--
I
N I i N I
N
- N I N _ -_ i. _ _ 5 ._ 0_ _. 1 _ __ N _ _ i ri I
j I
5 I----. N 1 20 .- .. . - . .- - ! L
I
-+---.----
~ N
; ;
IG(2000)
;
N ! - N . . . . 1 N I N ~ I N 1 5 ;
.--, - . .- - N
N
I
j .--. - . -- - -
N ! 7 7 N
L i L' i
N i N
+ -
'
,
I
!
20 70
L
I
100 1 N 1
- .* -- '
i
I
10
50 -
. -... . ----- G(10000)
I
~i N I
i
N N \
L--- N ; . . -. . - . .-. N .-A- !
An~lysis 5y f?:ar.;h Expo!a[ton Hesearch. il S Geoi ri,8:.;cy. T.er.c?:. Cilior:,~?
Fe. Ug. Ti repor!cd !n Y. 311 o::,er elemenf; rc~:,rIed 9;lrn.
Lower Irmits 9f deie:mlilallOn ara in pjrentheses
G = great.' dalue sho.un. N = 11ot 0elec:ed at :IF::: 01 dulzCt;.m < C;.!ec:ec. oar celow v ~ae shown

.- Semi-Quantitative Spectrographic Analysis
Sample Number
. .
Au
(10)
n
(10)
N
5 0
1
N
100
N I N
. ../--- -----:
N
I
1
N
50 1
I
N
200
N N
Ba
(20)
Be
(1)
Bi
(10)
Cd
(20)
Co
(5)
Cr
(10)
200
N
N
20
30
500
N
N
N
10 !
100 1000 , 2000 I 2000 f
I - !
I
3
1 I -1 !--- I
N I N i N i
- ---
i
N
-- -I! _-- N
!-.
/
N i 50 i 100 20
1
15 1 100 70 1 30 [ ! - ----
L
.- I
i
1
N
100
i
I
I
j
1.5
N
N
10
I +-----. -
Cu
(5) 50 1 10 1 7 ! 150 1 150 ! 70 i 70 20
-.-.- - +--- , - - - - . . - - - - -. - i
L3
(20)
N I 50 1 N I
50 lI-.----- N 'LjN
i I
i I
1 50
! I -
N N i 200 j N i7-
1 15 -
i
- - - ,- ---.- - -1L
L I N I N I N
I L
- I i i
. - . . -- -- - - -. . . . - -- - . -
30
I
1 - / 5 --
I
50 j 70
Mo !
Nb 120)
,
NI I 1
(5) 100 70 j 1 0 1 7 --. / 20
Fb (10) L 1 100
Sb I
(loo) N 200
Sc (5) 5 N 30 I
Sn
(10)
Sr
(1001
v
(10)
W
(50)
Y
(10)
N
100
1500
L
N
I
N
L
50
50
1
---
I
!
,---
70
-
100
-
N
Zn
(200) N
Zr
(10)
Th
300
(100) N N I N i
--.- ._A ---- ____. _ .
Et::,.c:. !::!io:il.1':
Analysis 9y Branch Expl~rat~on Resr:irch. U S 22~1. j~l:ie~.
Fs, hlg. Ti reported in ?o. JII Dim dements ~t~p:r:ed in 92-1.
L0W.r IlmlIS of deterrn~rul~on are in p~renlhese:.
G - great" !!:an ,lalue 5how11, Fi = no1 de:ecteC Jt Iln:l1 Ot !!e!?C:i?fl < de!ecled. but 3elow value sbown
7
-
I
I
. I--

-
Semi-Quantitative Spectrographic Analysis
.:lernent Sample Number
_-_--.-- I
2418 2419 2420 2421 1 2422 1 2423 1 2424
-.-A
----- ---
Fa ho 3 5 2
"' Ibz, .7 5 .2
G (20)
" h*) .1
2 0
.1
1.5 .- ----
.002
M n
(10) G (5000) 6 (5000) I 500 j 5000
500 1
1
100
-
N I N
.- -. . , - --
(10) 30 20
Ba (20) 700 5 0
Be
(1)
N N N
Bi
(10) N N 1
~d -iiS----. i 1
(20) N N
---_-t--
Co !
(5) 50 15 i
! - 50 N
0 ! 00 i 5 N 1 200
N
1 N 50
Cr 10 1 15 I 20 10 10 / L
1
i -I
G(500)
loo f -
100 ; , i 150 : ! ~(20000):----100 1
--- I
----- . , ._ - _ _ - -_ _ , -. - - .- _.
I
!
N I N :
I
(5)
------ i
* ..:
~b N ? N N N I
(20)
N I (5) 15 10 i 20 i
Pb
I I N , N i , N N
+.
N N1 I
N
N I
r-----
(10) - -
Sb ' I
(100) N 500 1 150 i 100 1 10CO
Sc
(5) 7 ! L I L
, . .. - . .- -. -. -1 -
S n I I t- I
(10) N
S r
(1 00) 500
v
- --
I
L 1 300
- - . . - .-. - . . - -. - - - , . - -- -- -
(101 7 0 70 1 100 :
---.--- L ; 20 j 50
--- .r-. . 2 0
W (50) N N . N
Y (10)
. .
15 10
Zn (200) N 1000
Zr L10) 10 20
10- -- .- -- - -
Tn (1001 N N
<
Anaiys~s by Branch Explor.111on Research. IJ S h ~ l 5;:rvey. . !Iensrt.r Cclorafl9
Fe. Mg, Ti repcrad In K. ,111 o:hc: clenier;!: i.rg.~rted ,n 7;rrn.
Lower I1mi:s of de:e!rnlnal~on a:e :c p~renlhese:
G great?.r :IlJA ,rdlue sbcw;l N - no1 Celecled al II~~II ct de!?cl:s? ; Ce!ectec!. DU: oelow value shown.
L
N -
100-

. Semi-Quantitative Spectrographic Analysis
3ement Sample Number
-.-
.D "
i"05)
"2)
24 2 7
a - 2432
2433
I
1 2434
2
1
2435
10
3
ca
rca
Ti *
(002)
.1
N
1 L
L
---
2 3
1
Mn (10) 2000 ' 10 5C0 --
[\? .5)
3-000 200
As
(200) - - -- - - - -, - - - .-
Au
(10) N N N
8 (10) 30
Ba (20)
N i PI N j N
06 i
(1) N
-
Bi G(lOO0) 150 1 N" N
(10)
,
i N
I
Cd G(500) 500 N N
(20) i N
C 3
(5) N / N - 1 50
Cr
30 N 10 I 50
-----
La ?i !
--
NI
(5)
10
Pb
(10) --
I N
5 [ N
!
! 1000
I
I : I ;
I
( N 1 %
2 o 7 j 15
Sb (160) 10000 7000 1 L
sc (5) N .
S n (10) N
S r
(1JO)
N
I
--
v (10) L 2 0 200
W
(50) L L
N N
Y
(10)
Zn
(200)
N N
coo 200 N
N N
N N
Lower 11ml:S of Cait!cll;lJllOn are in gz:enlhtser.
I
I
1500
30

. Semi-Quantitative Spectrographic Analysis
Sample Number
La I ,
(20) N N N I 50 i
I
----I - - -- -i -. -- . __(------
Mo (5) N N
- - .--- .----
Nb ! I
(20) L. N ~ N
N I N 1 0 i
-------
! ,
NI
70
- ----- --
Pb
(10) 20 , 10 i I L I 15 j 20
-
!
Sb I
(100) 500 L . ! L 1 300 j 100 : i N
r
Sc
(5) N 30 10 10 10 j. 5 I
: I- ----
. . __ ._ _ ., . __ __J.. -
s n N I N N . N ' i--------
(10) N I
(5) 5 I 7 I
I--
Sr (100) L 300
v (10) 15
W
(50)
Y
(10) 10 30 ' 1-
I
L N !
Zn
(200) N
-- .
N
Zr
(10) 100
Th
(100) , N N N 0
-/ N I +-
Anaiysis by Branch Ex~!orallon Res; arch. iJ S Gcal SI.:';C/. f:snv?:. C~lofa.:?
Fe. Mg. Ti reporlea ir! YO, dl! ol>er t\e!ilefits repxiel: I:) ppm.
Lower Ilnils 31 de:e:rn~nrrt~an are in p.trentheses.
G = grcaf-' ':?Jn hla!us shown. N = not Cetecled at :I~I: of dcrecl~on < r!a!ec:ed. but be1o.u value shown.

I
Element
1 w
Fe 46
(.05)
Mg %
(.02)
Ca %
(.05)
Ti %
(.002)
M n (10)
Ag(.5)
As (200)
Au (10)
B (10)
Ba (20)
Be (1)
Bi (10)
Cd (20)
Cr (10)
Cu (5)
La
(20)
Mo
(5)
Nb
(20)
N i
(5)
Pb
(10)
Sb (100)
Sc (5)
S n (10)
S r (100)
v (10)
i (50)
r y
(1 0)
Zn (200)
Zr
, (10)
a Th
(100)
2443
15
.3
1.5
.03
300
2
7000
N
100
1500
N
15
N
7 o
L
700
100
N
N
10
7 0
N
L
N
100
10
N
2 0
L
20
N
Semi-Quantitative Spectrographic Analysis
2444
7
.07
L
.1
70
N
L
N
70
300
1
N
N
5
2 0
30
30
N
N
20 i
N
15
' N '
300
N
2445
1
.1
2
.15
200
N
N
N
7 0
500
L :
N
N
L
2 0
5
30
N
N
7 I
N
10
N
100
N
Sample Number
2446
5
.3
.07
20 I L 1 N
L 10 10 150 100 700 L
N
5
N
L
3 0
N
5
N
150
20
1
.2
200
N
L
N
70
500
N
N
7
50
N
15
N
200
N
2447 1 2448 j 2449
1.5
.07
Analysis by Branch Exploration Research. U.S. Geol. Survey. Denver. Colorado
Fe, Mg. Ti repofled in %. all other elements reported In ppm.
Lower lim~ts of determination are in parentheses.
G = greater than value shown. N = not detected at limit of detectlon. < detected, but below value shown.
.7
-1
N
10
300
5 0
N
2450
.5
2
.07
.1
,
I
.05
-1
i -07
.1 1
5
.07
3
-1
70 50 200 300 200
15 10 / 20 7 0 7 20
30
I
20 2o i 20 1 30 t 30
I
N N
N
N
7
N
. L
50
5
5000
N
100
200
I I
N
I i
, 150 j 200
5 1 L
N
N
L
2 0
2
1500
N
150
I . N I N .
10 L
300 2 00
150 3 0
N
N
L
N
L
15
5
.07
7
3000
N
150
N
N
I
L
N
N
N
300 ! 200
5
N
N
N
200
1 N
15 10
N 1 N
70 ! 70
N
L
N
100
N
1
2451 !
.5
2 I
.5
I
500 j 200 150 7 o j
I l l 1
N
N
N
N
N
N
N !
j
N
N
N
N I N
2 0 1 L
L
2 0
1 N J
N !
10 5 1 10 I
N
L I
N
L
N
L
15
N
15
N
200
N
,
I
I
N I N i
N j N I
20
50
1

Element
Sr (100)
i v
1 (1 01
W (50)
Y
i (10)
I Zn
1 (2001
1 Zr
i (10)
i Th
! (100)
150
50
N
10
N
100
N
Semi-Quantitative Spectrographic Analysis
Sample Number
150
100
N
5 0
150
N
N
L
15
N
L
N
100
N
L
70
N
L
N
7 0
N
Analysis bv Branch Ex~loration Research. U.S. Geol. Survey. Denver. ColOr~dO
Fe. ~ g 1; . reported in'%, all other elements reported In ppm.
Lower limits of determination are in parentheses.
G = greater than value shown. N not detected at limit of detection. < detected, but below value shown.
L
50
N
10
N
7 11
N
L
150
50 .
10
N
100
N

. Semi-Quantitative Spectrographic Analysis
Element Sample Ntimber -.--
7
Fe r05)
" r02)
Ca k)
Ti '
('002)
Mn
(10)
?(.5)
As (200)
Au (10)
0 (10)
Ba
(20)
Be
(1 1
Bi
(10)
Cd (20)
Co (5)
Cr (10)
Cu (5)
La (20)
M o (5)
Nb
120)
N i
(5)
Pb
(10)
Sb
(100)
Sc
(5)
Sn (10)
Sr
(100)
v
(10)
W (50)
Y (10)
Zn (200)
Zr
(10)
Th
(100)
2501A
5
.03
.05
.3 -
3 0
2 0
N
N
3 0
5000
' T----r---
25018 2502 1 2503 1 2504A 1 25048
.15 ' 2 ! 7 I .5
*- - !
.05 .05 1 1 .2 1 .5
7------
I
1 .2 ! .1 , .05
7 0
1.5 j
.02 .03
--
I
N N N
3 0 700 30
-.
500 ! 50 100
5 0
2 1 20 i .,.*: 1.5 i
N
N
N
N ! N
_.__-c-
N \ N
N I N ( N
50 10 ; 2 0
1500
N I N I
1
?
50
I
i ;
i
100
50
j 20 ,------.-- !
N
i
I , L
I
i 50
N
I 1
I
500
X
15 N [ - - - - - - - - - - % N
i-.--- r-p.9 -4 -
- - L
-r--
I
.---- 1- 1 1 -
!
' 2 0 '1 1 0 1 N
-1-
---A- -.
I
N
7
N
N
7
100
I
1
f
I
I -
5
I
f
i
4
. L. !
N
5
N
1 10
\ L
.-i
' 70
4--- I
2 0
Il - N
:
' I
I
1 1
-'-N
!
: -
N
N
0
!
1 7
--
1 0
! i L
N / N
I ----I
7 - 5 7
2000 j 70
-
i 150
N 5 20
I
I N
I
l
-.-
5
I N I N
N
i N N I
10 i I
L L
150 L I 50
L L
15 . I
- .- - -- -
N L. 1 L
- .-. . . -
100
N - - N. - ~ -.,-..- I N. .- _ ..i ' - - .- N 1- I
Analys~s by Brancn Ex31ori;ion Iles~arcb, il S Leal. 51ir.lr.v !I, :1vr: Cdorir:*~
N --A N
Fe. Mg. Ti reporled in 76. dll ot:,cr zler;ie~;ts ic!p:)~leu i!~ pjni.
Lower lim~ts of dete:zinctl~on are in 2ct:eniheses
G = gre~t-1 '.! 17 .rJ!ue snobvn. N = ncr de!ected at Ilrn~r 01 detect~?n. < C~lecled. but beiow value slrown
1
L